PROVIDENCE COLLEGE FOR WOMEN - DEPARTMENT OF COMPUTER SCIENCE AND APPLICATIONS
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PROVIDENCE COLLEGE
FOR WOMEN
DEPARTMENT OF COMPUTER
SCIENCE AND APPLICATIONS
technojunkie2020@gmail.com
CONTENT
COMPUTER THEN Vs NOW
HOLOGRAPHY IN TODAY’S WORLD
INTERNET OF THINGS IN HEALTHCARE
TOP 5 MOST LOVED PROGRAMING LANGUAGES
VPN
R-THE DATA SCIENTIST TOOL
THE SCIENCE IN DATA SCIENCE
TOP 10 TECHNOLOGY TRENDS IN 2020
WHATSAPP DISAPPEARING MESSAGES
GOOGLE PAY NEW UPDATE
AWSOME INVENTIONS WORTH NOTHING IN
2020
BLOCK CHAIN
ARTIFICIAL INTELLIGENCE
NETWORKING CISCO IN 2020
JAVA SCRIPT
CONTENT
ARTHI.S
EASMI ANGEL.A
PRIYANKA RAJAMANI
SALAMA .J
LATHAA.M
SANDHYA .J
COVER AND LAYOUT
JANANI.S
KEERTHANA SUNDAR RAJ
COMPUTERS THEN Vs. NOW
The computer was born not for entertainment or email, as it is used nowadays,
but out of a need to solve a serious number-crunching crisis. For example, by 1880, the
U.S. population had grown so large that it took more than seven years to tabulate the
U.S. Census results. The government sought a faster way to get the job done, giving rise
to punch-card based computers that took up entire rooms.
Definition of Computers
Before we talk about the history, evolution and revolution of computer, let’s take
a minute to understand what COMPUTER really means. A machine that can store,
collect, process, arrange data of any form is called a computer. Every device that can do
the above listed operations can be called as Computers. So, the term Computer covers a
range of devices, from Personal desktop to laptops to smart devices to the device that
controls International Space station which is floating 100s of KMs above our head.
History of Computers
Originally, calculations were computed by humans whose job titles were
computers. Anything that can compute was called as Computer in the earlier days.
Abacus, the first machine, was a device that was used by people as early as 2400
B.C. to perform simple calculations. The abacus in the form we all are aware, was used
in China in the 500 B.C.
In the early 19th century, father of Computer, Charles
Babbage, invented first mechanical computer. It was an
automatic mechanical calculator designed to tabulate
polynomial functions. Later, Augusta Ada Bryon suggested to
Babbage to use Binary system. Then the first Analytical engine
was invented. Based on Babbage’s device Per Georg Scheutz
invented the first printing calculator.
In 1943 A.D., Howard H. Aiken invented the first electro-
mechanical computer and named it as Harvard Mark 1. Also
known as IBM Automatic Sequence Controlled Calculator. It
was the first operating machine that would execute long
computations automatically. It used 800 km of wire with 3
million connections, 3500 multipole relays with 35,000
contacts, 2225 counters, 1464 ten pole switches and tiers of 72
adding machines, each with 23 significant numbers.
1
Generations of Computers
• First Generation: Used Vacuum tubes for circuit and magnetic drums for
memory and were often enormous taking up an entire room. Very
expensive to operate, required a lot of electricity, generated a lot of heat.
Often caused malfunctions.
• Second Generation: Used Transistors replacing Vacuum tubes. One
transistor nearly replaced 40 vacuum tubes. It allowed the computer to be
smaller, faster, cheaper, more energy-efficient and reliable.
• Third Generation: It used ICs – Integrated Circuits. Transistors were
miniaturized and placed on Silicon chips called semi-conductors. It made
the device to much smaller and cheaper than the predecessor. It could
carry instructions in billionth of a second. It also added device such as
Keyboards, Mouse which will be interfaced with a Operating System
(OS). It allowed various program and applications to run at one time.
• Fourth Generation: It replaced ICs with micro-processor, which housed
thousands of ICs in a single silicon chip. This made the device much
smaller than the predecessors and making it more powerful. It also
provided the ability to link computer that could form a network. It led the
way to interactive GUIs and handheld devices such as Palmtop.
• Fifth Generation: This changed the vision of Computer industry totally. It
will use the AI – Artificial Intelligence. The use of parallel processors and
superconductors is helping to make AI a reality. We can Voice recognition
as an example of this generation.
A glimpse into the future
Artificial intelligence (AI), is intelligence demonstrated by machines, which
is unlike the natural intelligence displayed by humans and animal. Colloquially, the
term "artificial intelligence" is often used to describe machines (or computers) that
mimic "cognitive" functions that humans associate with the human mind, such as
learning and problem solving. High-profile examples of AI include autonomous
vehicles (such as drones and self-driving cars), medical diagnosis, creating art
(such as poetry), proving mathematical theorems, playing games (such as Chess or
Go), search engines (such as Google search), online assistants (such as Siri), image
recognition in photographs, spam filtering, predicting flight delays, prediction of
judicial decisions, targeting online advertisements, and energy storage.
2
Conclusion:
Right now, the World is in the fifth generation of computer age. Age just
started a decade ago, and it doesn’t fail to surprise us with the technological
inventions and discoveries. In a few decades, robots could take the place of human
and perform the activity that was done manually, this can be good and bad. Imagine
conversing to a robot that can aid you with your tasks, do home chores, manage your
diet and health, etc. Imagine talking to a virtual assistant and get prescriptions for
your illness. Imagine every car out there is running automatically without a need for
a driver. Imagine a robot manages your house, doing home chores, cooking your
favorite meal, cleaning the dishes, also order groceries whenever it is going out of
stock. Those days are not far enough, the world will one day see a Technology Age
like Stone age or Iron age. Let’s wait for the days to come and be ready to embrace
the age.
3
HOLOGRAPHY IN TODAY’S WORLD
“Holograms used to be the stuff of science fiction that was
coming to a theater near you"
Holograms of varying forms have
As technology continues appeared over the years, including
to progress, we are given the transmission holograms, which allow light to
opportunity to explore new and be shined through them and the image to be
more exotic types of viewed from the side, and rainbow holograms,
programming, software, like those used on credit cards and driver's
hardware, and systems. One licenses for increased security.
innovation that is growing at a
rapid pace is hologram The development of hologram
technology. technology began in 1962, when Yuri
Denisyuk, of the Soviet Union, and Emmett
Holography is a Leith and Juris Upatnieks, at the University of
photographic technique that Michigan, developed innovative laser
records the light scattered from programs that recorded objects in 3D. They
an object, and then presents it as recorded on silver halide photographic
three-dimensional. emulsions at the time, but the clarity of the
objects was far from perfect. New methods
have improved holograms over time.
4
What Are 3D Holograms?
How Do Holograms Work?
3D holograms are coming into our lives. A 3D
To make a hologram, you record hologram is an object that isn't actually
an object (or person) in a clean "there," but looks like it is, either floating in
environment with a laser beam and mid-air or standing on a nearby surface. This
apply the information to a "augmented reality" (AR) is a revolution well
recording medium that will clean on its way.
up and clarify the image.
Microsoft ( MSFT ) has its HoloLens headset,
The laser beam is split in two and Apple ( AAPL ) uses ARKit, and Google (
redirected with mirrors. One of the GOOGL ) presents holograms in ARCore.
beams is directed at the object. A The tech is saturating the tech market, and IT
portion of the light reflects off the mega-corporations are racing to dominate the
object and is recorded on the AR market.
medium.
A hologram projected in a room could show a
The second beam (reference 3D concept car like it was really there, and 3D
beam), is directed toward the presentations for meetings and conferences
recording medium. This means the will wow audiences .And how about
beams coordinate to make a precise holographic telepresence? Yes, a hologram of
image in the hologram location. you projected to a meeting room thousands of
miles away!
These two laser beams interfere
and intersect with each other. The Holograms have the potential to dramatically
interference pattern is imprinted on improve training, design, and visualization in
the recording medium to recreate many business settings and production
the 3D image. facilities. Being able to "look at, zoom in on
and manipulate 3D versions of in-progress
designs radically enhances the design process.
Holography in Medical
Holography is on its way to revolutionizing medicine. It can be a tool for visualizing
patient data in training students and surgeons. Current systems like Magnetic Resonance
Imaging (MRI) and ultrasound scans generate complex data using advanced imaging
technology. This technology has the capability to produce full color, computer-generated
3D holograms. Using these 3D images for training and display, holograms require no
viewing devices or glasses. Students and doctors can simply "look", unhindered, at the
three-dimensional images. These images can include the incredibly complex organs and
systems of the body, like the brain, heart, liver, lungs, nerves, and muscles.
5
Internet of Things in Healthcare
Medical diagnostic consumes a large part of hospital bills. Technology
can move the routines of medical checks from a hospital (hospital-centric) to the
patient’s home (home-centric).The right diagnosis will also lessen the need of
hospitalization.
IoT, has an extensive applicability in numerous areas, including
healthcare.With the use of this technology-based healthcare method, there are
unparalleled benefits which could improve the quality and efficiency of
treatments and accordingly improve the health of the patients.
Benefits Applications of IoT in healthcare
➢ Simultaneous reporting and
monitoring ➢ Ingestible sensors
Real-time monitoring via These are a pill-sized sensor
connected devices can save lives which monitor the medication in our
in event of a medical emergency body and warns us if it detects any
like heart failure, diabetes, asthma irregularities in our bodies.These
attacks, etc.The IoT device sensors can be a boon for a diabetic
collects and transfers health data: patient.
blood pressure, oxygen and blood
sugar levels, weight, and ECGs. ➢ Moodables
➢ Data assortment and analysis Moodables are mood enhancing
devices which help in improving our
IoT devices can collect report and
analyses the data in real-time and mood throughout the day.Moodables
cut the need to store the raw data are head-mounted wearables
➢ Tracking and alerts ➢ Computer vision technology
` Computer vision technology along with
IoT enables real-time alerting, AI has given rise to drone technology
tracking, and monitoring, which
which aims to mimic visual perception
permit hands-on treatments, better
accuracy, apt intervention by and hence decision making based on it.
doctors and improve complete
patient care delivery results.
.
6
Top 5 Most Loved Programming Languages in
2020
If your dream is to become a good software developer in this 21st century
and you started learning and coding with a programming language, but wait! do
you know Which programming languages do developers love the most? do you
know what is the latest coding trends? If you don’t then this article going to help
you a lot to choose the perfect one
1. Rust 2. TypeScript
According to the 2020’s
StackOverflow’s Developers Survey TypeScript a strict syntactical
those who get the opportunity to use Rust superset of JavaScript language with
have fallen in love with it and 86.1% of optional static typing is specially
65,000 developers rated Rust as the most designed to overcome the shortcomings
loved programming language since 2016. of JavaScript for the development of
Rust is a multi-paradigm programming large-scale applications. It is an open-
language especially focused on source programming language by
performance and safety; It is similar Microsoft with support for features
to C++ but provides memory safety such as classes, modules, and an arrow
without garbage collection function syntax as defined in the
. ECMAScript 2015 standard.
Performance: Performance of Rust is
comparable to the efficient and super Type signature: it has Type
performer C++. annotations with compile-time type
Syntax: Rust syntax is similar to C checking,
and C++, with blocks of code Type inference: it can automatically
delimited by curly brackets, and detect the data type of an expression,
control flow keywords such as if, else, Type erasure: remove explicit type
while, and for. annotations from before run-time
Major Projects using Rust: Many execution.
popular types of Software are built Modules and namespaces: supports
using Rust. For example, Firefox, encapsulation of classes, interfaces,
Microsoft Azure, Discord, Redox, and functions into containers
Firecracker OpenDNS, TerminusDB
are written using Rust.
73. Python 4. Kotlin
Python is a very popular, high- Kotlin is an open-source, cross-
level, interpreted general-purpose platform, statically typed, a modern general-
programming language. This language purpose programming language, which makes
supports multiple programming developers happier for its brilliant features.
paradigms including structured, According to Google Kotlin is the preferred
object-oriented, and functional language for Android app development and
programming language which helps was included as an alternative to the standard
the programmer to verify code and Java compiler in Android Studio 3.0.Kotlin
design to be highly extensible. not only supports classes and methods of
Python is dynamically typed and object-oriented programming but also supports
garbage-collected language, library procedural programming with functions.
which is one of its greatest strengths
Simplicity: Kotlin isa very simple and
provides tools suited to many tasks.
concise programming
This compact modularity has made
language which drastically reduces the
this so popular.
number of boilerplate code.
Indentation: Python uses whitespace Efficiency: Kotlin improves code quality
indentation instead of curly brackets and operations. and became very efficient and
or keywords to delimit blocks, nearly perfect.
Typing: Despite being dynamically Interoperable: Kotlin has massive
typed, it is strongly typed language, interoperability with the existing libraries of
uses duck typing, and has typed JVM, Android, and the browser.
Tool-friendly: Large numbers of tools has
objects but untyped variable names
plug-in support for Kotlin. You can use any
Development: Python’s development Java IDE or use the command line for Kotlin.
is conducted by Python Enhancement Safe and reliable: It avoids entire classes of
Proposal (PEP) process and some errors such as null pointer exceptions,
awesome PEPs are reviewed and automatically remove mistakes and simplify
commented on by the Python the code for debugging and operations. And
community and the steering council. reduces Crashes at Runtime.
Uses: Lots of tech giants use Python Uses: Gradle is introducing Kotlin as a
including Wikipedia, Google, language for writing build scripts. due to
Yahoo!, CERN, NASA, Facebook, open-source large no of companies adopting
Amazon, Instagram, Spotify. Python Kotlin including Corda, Evernote, Coursera,
is vastly using in AI and ML projects Spring, Atlassian, etc.
with the help of libraries like
TensorFlow, Keras, Pytorch, and
Scikit-learn.
85. GoLang
Go is a statically typed, open-source programming language designed at Google that
makes programmers more productive and helps to build simple, reliable, and efficient
software very easily. This language is often referred to as “Golang” because of its domain
name, golang.org, and is syntactically similar to C, but with memory safety, garbage
collection, structural typing, and CSP-style concurrency. This language has runtime
efficiency like C++ but has grater readability and usability’s like Python or JavaScript.
Concurrency: provides greater concurrency with the help of goroutine which makes it
extremely easy to implement in a concurrent system. Goroutines are very cheap,
lightweight threads of execution. and Spawning a goroutine is also very simple.
Simplicity and Consistency: This language was designed with a very minimalistic
approach and it is well known for its simplicity. Although it is a strongly and statically
typed but it does not support generics. The standard library and the packages are consistent.
Object-oriented: Go is an Object-oriented programming language and supports the useful
features of oops. it uses structs as a replacement for classes and goes for composition over
inheritance.
Tools: Go provides many useful tools for building, testing, and analyzing code including
go test for unit testing, go fmt for formatting, code, go get for retrieving and installing
remote packages, go run for building and executing code, etc.
Compiler: Its compiler is super-fast and easily compiles a large go program within a few
seconds. Due to super simple syntax, the compilation is much quicker in go and the
compiler can easily parse even without a symbol table.
9VPN
Virtual Private Network
A VPN is a private network that encrypts and transmits data while it
travels from one place to another on the internet. Using a VPN to connect to the
internet allows surfing website privately and securely as well as gaining access
to restricted websites and overcoming censorship block.
VPNs aren’t just for desktops and laptops and setup a VPN on iPhone,
iPad or Android Phone.
How does a VPN service work?
➢ Once connected to the internet with VPN service switched on then
connected to one of the VPN provider’s servers.
➢ At the same time, they will provide the IP address of that particular
server. Instead of using the own IP address.
Why use a VPN service?
➢ VPN technology was originally used to allow remote workers access to corporate
files and folders when working from a location away from the central office.
➢ Meant they were able to access sensitive documents on a secure and encrypted
internet connection.
➢ While this is still the case, when talk VPN referring to commercial services that
offer people security and privacy when accessing the internet.
o Make public Wi-Fi safer
o Stream regionally blocked content
o Access blocked websites
o Avoid censorship
o Prevent ISP tracking
o Prevent price discrimination
10Why is online privacy so important?
➢ VPNs can be used for all kinds of things in these days such as gaming
etc...
➢ The internet always getting bigger and when even toaster’s getting online
it’s easier than ever to have entire life exposed. These days everything do
is online.
➢ Google it, snap it, filter it, WhatsApp it the list is endless. And the risk of
exposure is higher than ever.
The browsing history, habits and behaviour are all tracked and stored by ISPs,
be it for government requirements or to sell to advertisers
Are VPNs secured? VPNs uses for web browsers
• Remember that encryption stuff we ➢ Opera
were talking about earlier? That’s what ➢ Chrome
makes a VPN secure. The AES 256-bit ➢ Firefox
encryption used by the best VPN ➢ UC browser
providers mean that all the data shared ➢ Microsoft
on internet connection is secure and ➢ Edge
private. ➢ Tor browser etc...
• If it’s good enough for military-level
government operations, then it’s good
enough for us.
11R - THE DATA SCIENTIST TOOL
➢ R is a programming language and software environment for statistical
analysis, graphics representation and reporting.
.
➢ R was created by Ross Ihaka and Robert Gentleman at the University of
Auckland, New Zealand, and is currently developed by the R
Development Core Team.
➢ R is freely available under the GNU General Public License, and pre-
compiled binary versions are provided for various operating systems like
Linux, Windows and Mac.
➢ This programming language was named R, based on the first letter of
first name of the two R authors (Robert Gentleman and Ross Ihaka), and
partly a play on the name of the Bell Labs Language S.
➢ R is a programming language and software environment for statistical
analysis, graphics representation and reporting
12Features of R
As stated earlier, R is a programming language and software
environment for statistical analysis, graphics representation and reporting.
The following are the important features of R −
• R is a well-developed, simple and effective programming language
which includes conditionals, loops, user defined recursive functions
and input and output facilities.
• R has an effective data handling and storage facility,
• R provides a suite of operators for calculations on arrays, lists, vectors
and matrices.
• R provides a large, coherent and integrated collection of tools for data
analysis.
• R provides graphical facilities for data analysis and display either
directly at the computer or printing at the papers.
13THE “SCIENCE” IN DATA SCIENCE
Data science is the field of study that combines domain expertise,
programming skills and knowledge of mathematics and statistics to extract
meaningful insights from data. It helps to organization to solve vexing
problem. Combining computer science, modeling, statistics, analytics and
math skills along with sound business sense data scientists uncover the
answer to major questions that help organization make objective decisions.
A data scientist’s level of experience and knowledge in each
often varies along as ranging from beginner, to proficient, and to
expert, in the ideal case.
The Pillars of Data Science Data Science Venn Diagrams
Expertise
Find many different
While data scientists often come versions of the data scientist
from many different educational Venn diagram to help visualize
and work experience backgrounds, pillars (or variations) and their
most should be strong in, or in an relationships with one another.
ideal case be experts in four Here is one of data scientist
fundamental areas. In no particular Venn diagrams created by
order of priority or importance, Stephan Kolassa. Attempt to
these are: assign labels and/or
characterize the person or field
➢ Business/Domain that lies at the intersection of
➢ Mathematics (includes each of the primary
statistics and probability) competencies. ‘The Perfect
➢ Computer science (e.g., Data Scientist’ as the individual
software/data architecture which is equally to a strong in
and engineering) business, programming,
➢ Communication (both written statistics, and communication.
and verbal)
14TOP 10 TECHNOLOGY TRENDS IN 2020
Trend 1:
AI technology will be industrialized with large-scale
production. In 2020, there will be many “AI factories”
The increase solutions are rapidly entering the stage of
"industrialization." With the continuous investment
global technology giants pumped into ,AI technology
factories of AI models and data emerging in 2020,
associated commercial solutions on a large scale to
update industries. For example, AI solutions in the
customer service industry can be copied and applied to
finance, e-commerce, education and other industries on a
large scale
Trend 2: Trend 3:
2020 will be a critical year for the Deep learning technology will
large-scale implementation of AI chips penetrate the industry and be applied
AI chips on the edge will be more low- on a large scale
cost, specialized, and seamlessly
Core of open-sourced deep learning
integrated into downstream solutions. The
platforms is the deep learning
neural processing unit (NPU) will become
framework, which greatly lowers the
the basic module of the next-generation
edge-based general-purpose CPU chips. development threshold of AI
In the future, more and more device-based technology, and effectively improves the
quality and efficiency of AI
CPU chips will integrate deep learning
applications. In 2020, deep learning will
framework as the core to their designs
be applied across many industries at
scale to implement innovation and
Trend 4: accelerate transformation and upgrading.
Auto ML, automatic machine
learning, will greatly lower the
threshold of machine learning
Researchers only need to input
meta-knowledge (such as convolution
operations, problem descriptions,
etc.), the algorithm can automatically
select the appropriate data, optimize
the model structure and configuration,
train the model, and deploy it on
different devices.
15Trend 5:
Multimodal deep semantic understanding will become more mature and widely
used.
Multimodal deep semantic understanding takes the information of different
models such as voice, image, and text as input, and integrates perception and
cognition technologies to achieve a multi-dimensional deep understanding of
information. Combined with AI chips, it will be widely used smart home,
finance, security, education, healthcare, and other industries
Trend 6:
Natural language processing technology Trend 7:
will be deeply integrated with knowledge,
and computing platforms for general The Internet of Things (IoT) will
natural language understanding will be breakthrough in three directions:
widely used. boundary, dimension, and
With the emergence and development scenario.
of pre-training large-scale language model. With the development of 5G
Semantic representation pre-training and edge computing, computing
technology based on massive text data will power will not be limited to cloud
be deeply integrated with domain knowledge computing centers, expanding to
to continuously improve the effectiveness of everything and building a
natural language processing tasks such as distributed computing platform.
automatic question answering, emotional This will promote the integration of
analysis, reading comprehension, reasoning, IoT with more scenarios such as
information extraction, etc. energy, power, industry, logistics,
medical treatment, and intelligent
city, and create greater value.
Trend 8:
Intelligent transportation will accelerate its implementation in various scenes such as
parks and cities.
In 2020, more autonomous vehicles will be applied to different scenarios such as
logistics, public transport, geofenced areas, and so on. At the same time, V2X (vehicle to
everything) technology is ready for large-scale deployment and application, which makes
vehicles and roads form a wide range of connections, further promoting the realization of
Intelligent Vehicle Infrastructure Cooperative Systems (IVICS), and accelerating the
implementation of intelligent transportation in parks, cities, expressways and other
scenarios
16Trend 9: Trend 10:
Blockchain technology will be Quantum computing will usher in a
integrated into more scenarios in a new round of explosive growth,
more pragmatic manner. injecting new vitality into AI and
With the in-depth integration of cloud computing.
Blockchain technology with AI, big With the successful
data, IoT, and edge computing, the demonstration of quantum hegemony,
problems concerning the online and quantum computing will usher in a
offline mapping of data and assets will new round of explosive growth in
be solved one by one. For example, in e- 2020. In terms of quantum hardware,
commerce, Blockchain can ensure the the performance of programmable
authenticity of the whole process data of medium-sized noisy quantum devices
goods; in supply chain, it can ensure the will be further improved and have the
openness and transparency of the whole ability of error correction. More and
process data, as well as the safe more industry giants have invested in
exchange between enterprises; in R&D resources for strategic layout,
government affairs, it can achieve the which has the opportunity to bring a
opening of government data, the new face to the future AI and cloud
realization of electronic certificates and computing fields.
so on.
17WHATSAPP 'DISAPPEARING MESSAGES'
WhatsApp 'Disappearing Messages' feature now in India: How to
enable it on android, iOS
WhatsApp had earlier announced that the
feature is now official and will be rolled out to its
users 'during this month'
'Disappearing Messages' feature is available
on all WhatsApp-supported devices including
Android, iOS, and Linux-based KaiOS devices,
along with WhatsApp Web and Desktop platform
After weeks of officially
launching the much-awaited
'Disappearing Messages' feature
with a time limit of seven days
before the message gets
automatically
deleted, WhatsApp recently
released the update for its Indian
users.
The Facebook-owned
messaging app had earlier
announced that the feature is now
official and will be rolled out to
its 2-billion plus users "during
this month."
The 'Disappearing
Messages' feature is available for
individual as well as group chats.
However, in group chats, the
group admins will be able to
enable disappearing messages in
group chats.
The feature is available on
all WhatsApp-supported devices
including Android, iOS, and
Linux-based KaiOS devices,
along with WhatsApp Web and
Desktop platform.
18• As mentioned, once Disappearing Messages feature is enabled, new
messages sent in the individual or group chat will disappear after seven
days.
• The most recent selection controls all messages in the chat. "This setting
won’t affect messages you previously sent or received in the chat,"
WhatsApp said in its support page.
• Disappearing messages will also wipe out photos and videos after seven
days, and while messages will disappear for both parties it’s still
possible to take screenshots or just simply copy messages before they
are automatically deleted. Or, you can also save the photos or other
content with auto-download on. You can turn auto-download off in
WhatsApp Settings > Data and Storage Usage.
• If a user doesn’t open WhatsApp in the seven day period, the message
will disappear. However, the preview of the message might still be
displayed in notifications until WhatsApp is opened.
• Moreover, if a disappearing message is forwarded to a chat with
disappearingmessages off, the message won’t disappear in the forwarded
chat. Also, if a user creates a backup before a message disappears, the
disappearing message will be included in the backup. Disappearing
messages will be deleted when a user restores from a backup
How to enable WhatsApp How to switch off
Disappearing messages feature on Disappearing Messages
Android and iOS smartphones: feature on Android and iOS
• Open the WhatsApp chat on your devices:
Android or iOS devices. • Once disabled, messages sent
• Tap the contact’s name. in the chat will no longer
• Along with the contact's disappear.
information, you will also find an • Open the WhatsApp chat.
option of Tap Disappearing • Tap the contact’s name.
messages, right above the • Tap Disappearing messages.
"Encryption" of the messages • Select Off.
option.
• Once you have tapped on it, select
on. 19
• It will switch on the disappearing
messages option for the particularGOOGLE PAY A NEW UPDATE
Google Pay to remove payments on web app, will start
chargingtransfer fee.
➢ Google Pay is set to kill the peer-to-peer UPDATED GOOGLE
payments facility on its web app in January and PAY LOGO
is going to add a fee for instant money
transfers, the media reported.
➢ Google Pay offered the ability to manage
payments as well as send money from both a
mobile app or from pay.google.com.
➢ Now, Google has released a notice on the web
app that notifies users that the site will no
longer work from January next year.
➢ "Starting early in 2021, you won't be able to use pay.google.com to send and
receive money from other people. To send and receive money, use the new
Google Pay app," the company informed.
➢ While you can still manage payment methods on the web app, peer-to-peer
payments will cease to exist.
➢ Google also clarified on a support page that the original Google Pay app will
stop working in January, reports 9to5Google.
➢ Google Pay will also add a fee on instant money transfers.
➢ "It can take 1-3 business days when you transfer money to your bank account.
Debit card transfers are usually instant. There is a fee of 1.5% or $.31
(whichever is higher), when you transfer out money with a debit card," the
company said on its support page.
➢ Google last week introduced several features in its Pay feature for both Android
and iOS users which have been first rolled out in the US.
UPDATE:
"These charges and fees are specific to the US and do not apply to the Google
Pay or Google Pay for Business apps in India."
20Awesome Inventions Worth Nothing in 2020
HiMirror Mini Snore Circle
Like many other objects of daily utility, Snoring is caused due to restricted
our mirrors are getting smarter too and airflow in the throat while sleeping
HiMirror is a company pioneering in this and besides being a major
field. HiMirror Mini is one of the latest annoyance, can be a cause of many
products to be added to the company’s diseases. So, if you want to break
catalog of smart mirrors and besides the snoring habits you or someone
letting you look at your face with greater in the family might have, Snore
clarity compared to a normal mirror; this Circle is a great gadget. It uses a
one can perform a total of 8 different combination of audio and bone
types of analyses on your face. This conduction to sense when you’re
includes looking for wrinkles, fine lines, snoring and in turn, sends micro
dark spots, roughness, complexion etc. by signals to the brain to reduce and
dividing your face into different areas and completely eliminate snoring.
analyzing each differently. Based on this, Besides helping you give up
the smart mirror offers advice to improve snoring, the compatible app will
your skin by keeping it hydrated or using monitor the quality of your sleep
different types of lotions to fight and with the latest iteration, you
problems like acne. You can also order can wear your accomplishments of
more beauty products by just asking giving up snoring as a badge of
Alexa which comes inbuilt in this smart pride
mirror.
Dolfi – Next Gen Washing Device
Get ready to forget your woes of spending hours getting
adamant stains out of your clothes using soap bars. Because
it’s time for ultrasonic solutions to take over and Dolfi is an
example of how technology can transform the way we wash
clothes. Using carefully modulated ultrasonic waves, Dolfi
knocks dirt out of your clothes automatically without even
requiring you to dedicate any time to washing. Just keep the
DOLFI
dirty laundry in a bucket filled with water and detergent, and
let Dolfi clean them for you.
21Flexwarm Smart Jacket Solar Roadways
Another innovative product is the Solar Roadways is exactly what you’re
Flexwarm smart jacket. thinking after reading the name. These are
With built-in solar panels that can be used to pave roads,
heatingelements placed at chest, driveways, sidewalks, or any surface meant
wrist, and back parts, it’s for walking. Solar wafers protected under
designed to keep you hot even in thick layers of shatter-proof Gorilla Glass
a cold environment. It comes with can be used to generate electricity from any
special sensors to let you adjust surface. These modules come in hexagonal
the heat output as per your panels which makes replacement super easy.
convenience. As for design, it Additionally, Solar Roadways panels can be
sports a stylish look that can programmed electronically to show specific
match the fashion quotient of markings on the road. The panels can
both sports and fashionistas. Not generate enough heat to melt the snow and
to mention, it comes in a variety thus ensure easy walking or driving over
of designs to suit different tastes. them during winters. All of this while saving
the Earth and Earth-dwellers from
FLEXWARM succumbing to the damage caused by
JACKET greenhouse gases.
SOLAR ROADWAYS
HIMIRROR SNORECIRCLE
22BLOCK CHAIN
Blockchain is the foundational technology that powers electronic currencies
such as Crypto currencies. Blockchain is an electronic ledger that can be shared among
different users. This helps in creating a record of transactions that cannot be altered.
Each of these records is time-stamped and linked to the previous one. Every time a
new transaction is added to the ledger, it is stored as another block in the chain of
transactions. Blockchain is updated after the different parties contributing to the ledger
agree. After new data is fed into a block, it cannot be erased. This makes technology
verifiable and secure. This validation of transactions helps companies reduce their
costs as no third party has to be paid. Transactions are easier to track using
Blockchain.
There is a rise in careers in Blockchainand it
will create different job positions as:
➢ Blockchain Developers
➢ Blockchain Quality Engineer
➢ Blockchain Legal Consultant or Attorney
➢ Blockchain Engineer
“Blocks” on the blockchain are made up of digital pieces of information. Specifically,
they have three parts:
1. Blocks store information about transactions like the date, time, and dollar
amount of most recent purchase from Amazon.
2. Blocks store information about who is participating in transactions. A block
for splurge purchase from Amazon would record the name along with
Amazon.com, Inc. (AMZN). Instead of using the actual name, purchase is
recorded without any identifying information using a unique “digital
signature”.
3. Blocks store information that distinguishes them from other blocks. Hashes
are cryptographic codes created by special algorithms. Splurge purchase on
Amazon, but while it’s in transit, decide just can’t resist and need a second
one. Even though the details of new transaction would look nearly identical
to earlier purchase, we can still tell the blocks apart because of their unique
codes.
23Social Networking Problems Can be Resolved with Blockchain
Solution
There are approximately 2.77 billion social media users around the world by
the year 2019. This is one of the future trends of blockchain technology. Blockchain
applications on social media will be able to resolve issues related to known scandals,
privacy violations, data control, and content interest.
As blockchain integration in social media is another trend for new
technologies to emerge in 2020. With blockchain applications, all data transmitted
on social media will remain undetected and non-duplicate, even after deletion. In
addition, users will be able to store data more securely and maintain their ownership.
Blockchain also ensures that the power to match content is in the hands of the
creator, not the platform owner.This makes the user feel more secure because they
can control what they wants to see. The daunting task is to persuade social media
platforms to do so, this could be voluntary or due to the result of various privacy
laws similar to the GDP.
Economy and Finance Will Lead Blockchain Applications
Other traditional businesses, the banking and finance industries no need to
introduce radical transformation to their processes for adopting blockchain
technology. After it was successfully applied for the cryptocurrency, financial
institutions begin seriously considering blockchain adoption for traditional
banking operations.
Blockchain technology will allow banks to reduce excessive bureaucracy,
conduct faster transactions at lower costs, and improve its secrecy. One of the
blockchain predictions made by Gartner is that the banking industry will derive 1
billion dollars of business value from the use of blockchain-based
cryptocurrencies by 2020.
24Artificial intelligence (AI) is the technology used for equipping computer
systems with the ability to make decisions like humans. Being one of the
trending technologies, when AI programs are fed to systems, the aim is to
mimic human intelligence for performing complex tasks such as pattern
recognition, speech recognition, weather forecast and medical diagnosis.
AI is used in navigation-based applications like Uber, voice assistants
like Siri, video streaming services like Netflix, IoT devices and in search
engines like Google and Bing. AI helps in automating tasks such as traffic,
scheduling trains, making business predictions and designing driverless cars! By
2030, AI automation is expected to create more than 70 million jobs. The sad
fact is that AI might wipe out more than 23 million jobs by the same time
frame. AI will create jobs in areas such as testing, support, maintenance,
programming and data science.
Learning AI will help to secure jobs such as
• Machine Learning Engineer
• Data Scientist
• Computer Vision Engineer
• Business Intelligence Developer
• Data Analyst
AI increasingly used to create films, music, and games
Even in 2020, are probably still best left to humans. Anyone who has
seen the current state-of-the-art in AI-generated music, poetry or storytelling is
likely to agree that the most sophisticated machines still have some way to go
until their output will be as enjoyable to us as the best that humans can
produce. However, the influence of AI on entertainment media is likely to
increase. This year we saw Robert De Niro de-aged in front of our eyes with
the assistance of AI, in Martin Scorsese’s epic
In videogames, AI will continue to be used to create challenging, human-like
opponents for players to compete against, as well as to dynamically adjust
gameplay and difficulty so that games can continue to offer a compelling
challenge for gamers of all skill levels. Where AI does excel is in creating
dynamic soundscapes – think of smart playlists on services like Spotify or
Google Music that match tunes and tempo to the mood and pace of our
everyday lives.
25AI will become ever more present in cybersecurity
Hacking, phishing and social engineering attacks become ever-more
sophisticated, and they powered by AI and advanced prediction algorithms,
smart technology will play an increasingly important role in protecting us
from these attempted intrusions into our lives. The rollout of 5G and other
super-fast wireless communications technology will bring huge
opportunities for businesses to provide services in new and innovative
ways, but they will also potentially open us up to more sophisticated cyber-
attacks. Spending on cybersecurity will continue to increase.
Applications of Artificial Intelligence in Agriculture
The industry is turning to Artificial Intelligence technologies to help yield
healthier crops, control pests, monitor soil, and growing conditions, organize
data for farmers, help with the workload, and improve a wide range of
agriculture-related tasks in the entire food supply chain.
Use of weather forecasting: With the change in climatic condition and increasing
pollution it’s difficult for farmers to determine the right time for sowing seed, with
help of Artificial Intelligence farmers can analyze weather conditions by using
weather forecasting which helps they plan the type of crop can be grown and when
should seeds be sown.
Soil and crop health monitoring system:A German-based tech start-up PEAT has
developed an AI-based application called Plantix that can identify the nutrient
deficiencies in soil including plant pests and diseases by which farmers can also
get an idea to use fertilizer that helps to improve harvest quality. This app uses
image recognition-based technology. The farmer can capture images of plants
using smartphones.
26Networking Cisco in 2020
Experts expect that Cisco will focus on building-out cloud, SD-WAN and
security in 2020.
Cisco good and bad
The bellwether Cisco was the latest to note this “business softness” laying
blame on the world economy in general terms and slower than expected
enterprise deals in its latest quarter more specifically.After its Q1 2020 financial
call in November Cisco took the additional action of revamping some of its
business units and leadership with an eye towards increasing its competitive
tactics – primarily in the cloud arena. For example it rolled its Enterprise
Networking and Data Center networking teams into one group, and that
includes cloud computing.
Cisco dances in the cloud
Software in a variety of forms will be the focus for Cisco in 2020, and perhaps
no area will be more important than its hybrid-cloud-interconnect
strategy.“Cisco will continue to have a significant focus on tying together cloud
offerings from AWS, Microsoft, Google and other different cloud
manifestations as it looks to help bring consistency across and mitigate the
complexity of hybrid-cloud environments,” said Brad Casemore, IDC research
vice president for data-center networks.
Growing ACI
Casemore also expects Cisco will further enhance its Application Centric
Infrastructure (ACI) Anywhere technology, which gives customers the
flexibility to run and control applications anywhere they want across private or
public clouds or at the edge while maintaining consistent network and security
policies across their entire domain.
ACI Anywhere lets policies configured through Cisco’s SDN Application
Policy Infrastructure Controller (APIC) use native APIs offered by a public-
cloud provider to orchestrate changes within both the private and public cloud
environments, Cisco said. Cisco’s Orchestrator helps provision and manage the
implementation across multiple sites and services.
27Security integration
Better security for cloud interconnect, SD-WAN and other environments will be
an area where experts expect Cisco to show a lot of activity. That will reveal
itself in continued efforts to interlock and integrate security as the company
moves toward more holistic security, Casemore says. "One of these key areas
will be around the evolution of its Titration product towards more workload,
cloud-protection areas”.
Introduced in 2016, Cisco Titration Analytics gathers information from
hardware and software sensors and analyzes the information using Big Data
analytics and machine learning to offer IT managers a deeper understanding of
their data-center, private- and public-cloud resources.
Challenges in 2020
“Cisco’s challenge here is that the right steps include upgrading their SD-WAN
products to include specific zero-trust connectivity management, and they’re
afraid to do that because it might overhang their existing security products,”
said Nolle. “They need to broaden their vision of security to envelop SD-WAN
but also to secure cloud-native, Kubernetes-distributed applications."
Zero trust is also reflected in Cisco’s overarching security Threat
Response platform which includes a number of core Cisco products, among
them Umbrella, advanced malware protection for endpoints, and intrusion
protection. Experts predict Cisco will continue to fill out and improve
integrations with its threat platform especially where it involves the cloud and
access at the network edge. Cisco says its security business grew 22% year-
over-year from Q1 2019 to Q1 2020, and experts expect the company to
continue that success in 2020.
28JAVASCRIPT
JavaScript is the Programming Language for the Web.
JavaScript can update and change both HTML and CSS.
JavaScript can calculate, manipulate and validate data.
JavaScript is a dynamic computer programming language. It is
lightweight and most commonly used as a part of web pages, whose
implementations allow client-side script to interact with the user and make
dynamic pages. It is an interpreted programming language with object-oriented
capabilities.
Definitionof a standard version of the core JavaScript language.
• JavaScript is a lightweight, interpreted programming language.
• Designed for creating network-centric applications.
• Complementary to and integrated with Java.
• Complementary to and integrated with HTML.
• Open and cross-platform
Advantages of JavaScript Limitations of JavaScript
• Less server interaction − You
• We cannot treat JavaScript
can validate user input before
as a full-fledged
sending the page off to the
programming language.
server. This saves server traffic,
• Client-side JavaScript does
which means less load on your
not allow the reading or
server.
writing of files. This has
• Immediate feedback to the
been kept for security
visitors − They don't have to
reason.
wait for a page reload to see if
• JavaScript cannot be used for
they have forgotten to enter
networking applications
something.
because there is no such
• Increased interactivity − You
support available.
can create interfaces that react
• JavaScript doesn't have any
when the user hovers over them
multi-threading or
with a mouse or activates them
multiprocessor capabilities.
via the keyboard.
• Once again, JavaScript is a
• Richer interfaces − You can use
lightweight, interpreted
JavaScript to include such items
programming language that
as drag-and-drop components
allows you to build
and sliders to give a Rich 29
interactivity into otherwise
Interface to your site visitors.
static HTML pages.JavaScript Development Tools
One of major strengths of JavaScript is that it does not require expensive
development tools. You can start with a simple text editor such as Notepad.
Since it is an interpreted language inside the context of a web browser, you
don't even need to buy a compiler.
To make our life simpler, various vendors have come up with very nice
JavaScript editing tools. Some of them are listed here −
• Microsoft FrontPage − Microsoft has developed a popular HTML
editor called FrontPage. FrontPage also provides web developers with a
number of JavaScript tools to assist in the creation of interactive
websites.
• Macromedia Dreamweaver MX − Macromedia Dreamweaver MX is a
very popular HTML and JavaScript editor in the professional web
development crowd. It provides several handy prebuilt JavaScript
components, integrates well with databases, and conforms to new
standards such as XHTML and XML.
• Macromedia HomeSite 5 – HomeSite 5 is a well-liked HTML and
JavaScript editor from Macromedia that can be used to manage personal
websites effectively.
30ARTICLE CONTRIBUTION
1. COMPUTERS THEN Vs NOW
-Geethanjali [I MSc (CS)]
2. HOLOGRAPHY IN TODAY’S WORLD
-Soniya &Vinitha [I MSc (CS)]
3. INTERNET OF THINGS IN HEALTHCARE
-Chandhana.C & Abinaya.C [II MSc (CS)]
4. TOP 5 MOST LOVED PROGRAMMING LANGUAGES
-Easmi Angel [II MSc (CS)]
5. VPN
-Arthi.S [II MSc (CS)]
6. R -THE DATA SCIENTIST TOOL
-Priyanka Rajamani [II MSc (CS)]
7. THE SCIENCE IN DATA SCIENCE
-Salma.J [II MSc (CS)]
8. TOP 10 TECHNOLOGY TRENDS IN 2020
-Easmi Angel [II MSc (CS)]
9. WHATSAPP DISAPPEARING MESSAGE
-Keerthana Sundar Raj [II MSc (CS)]
10. AWSOME INVENTIONS WORTH NOTHING IN
2020
-Princy Felcia.V & Shahaduna Parveen.M
[II MSc (CS)]
11. GOOGLE PAY NEW UPDATE
-Keerthana Sundar Raj [II MSc (CS)]
12. BLOCKCHAIN
-Sandhiya.J [III B.C.A]
13. ARTIFICIAL INTELLEGENCE
-Lathaa.M [III B.C.A]
14. NETWORK IN CISCO 2020
-Janani.S [II MSc (CS)]
15. JAVA SCRIPT
-Priyanka Rajamani [II MSc (CS)]
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