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TECHNOLOGY






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 * Mobile technology
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SATURDAY, 24 DECEMBER 2022

 What is mobile technology?

Mobile technology is technology that goes where the user goes. It consists of
portable two-way communications devices, computing devices and the networking
technology that connects them.




Currently, mobile technology is typified by internet-enabled devices like
smartphones, tablets and watches. These are the latest in a progression that
includes two-way pagers, notebook computers, mobile telephones (flip phones),
GPS-navigation devices and more.




The communications networks that connect these devices are loosely termed
wireless technologies. They enable mobile devices to share voice, data and
applications (mobile apps).




Mobile technology is pervasive and growing. The number of smartphone users has
climbed beyond 3 billion¹ and the global mobile workforce is expected to reach
1.87 billion by 2022.²




Types of mobile networks

Cellular networks

Radio networks using distributed cell towers that enable mobile devices (cell
phones) to switch frequencies automatically and communicate without interruption
across large geographic areas. The same basic switching capability enables
cellular networks to accommodate many users across a limited number of radio
frequencies.³




4G networking

The current cellular service standard for most wireless communication. It uses
packet switching technology, which organizes data into parts or packets for
transmission and reassembles the information at the destination. 4G – “G” for
generation —  is reported to be 10x faster than 3G — and 5G, faster still, is
coming. 5G uses a set of aggregated frequency bands to unlock bandwidth and is
approximately 20x faster than 4G.




WiFi

Radio waves that connect devices to the internet through localized routers
called hotspots. Short for wireless fidelity, WiFi networks are like cell towers
for internet access, but they don’t automatically pass service without
establishing a WiFi connection. Most mobile devices allow for automatic
switching between Wi-Fi and cellular networks depending upon availability and
user preference.⁴




Bluetooth

A telecommunications industry specification for connecting devices over short
distances using short-wavelength radio waves. Bluetooth enables users to quickly
connect or pair devices such as headsets, speakers, phones and other devices.⁵







What is 5G?

5G is the fifth generation of cellular wireless technology. Like 4G, it uses
frequencies that are part of the radio spectrum, but 5G uses very high
frequencies that offer more bandwidth. This means more data delivered at higher
speeds to more devices. Imagine video streaming to a smartphone. According to
IBM, 5G will “improve that experience by making it 10x better not just for one
individual, but for anyone streaming a video at the same time.”


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MONDAY, 5 DECEMBER 2022

 Today’s world is an information-rich world and it has become a necessity for
everyone to know about computers. A computer is an electronic data processing
device, which accepts and stores data input, processes the data input, and
generates the output in a required format.




The purpose of this tutorial is to introduce you to Computers and its
fundamentals.




Functionalities of a Computer

If we look at it in a very broad sense, any digital computer carries out the
following five functions −




Step 1 − Takes data as input.




Step 2 − Stores the data/instructions in its memory and uses them as required.




Step 3 − Processes the data and converts it into useful information.




Step 4 − Generates the output.




Step 5 − Controls all the above four steps.




Computer

Advantages of Computers

Following are certain advantages of computers.




High Speed

Computer is a very fast device.




It is capable of performing calculation of very large amount of data.




The computer has units of speed in microsecond, nanosecond, and even the
picosecond.




It can perform millions of calculations in a few seconds as compared to man who
will spend many months to perform the same task.




Accuracy

In addition to being very fast, computers are very accurate.




The calculations are 100% error free.




Computers perform all jobs with 100% accuracy provided that the input is
correct.




Storage Capability

Memory is a very important characteristic of computers.




A computer has much more storage capacity than human beings.




It can store large amount of data.




It can store any type of data such as images, videos, text, audio, etc.




Diligence

Unlike human beings, a computer is free from monotony, tiredness, and lack of
concentration.




It can work continuously without any error and boredom.




It can perform repeated tasks with the same speed and accuracy.




Versatility

A computer is a very versatile machine.




A computer is very flexible in performing the jobs to be done.




This machine can be used to solve the problems related to various fields.




At one instance, it may be solving a complex scientific problem and the very
next moment it may be playing a card game.




Reliability

A computer is a reliable machine.




Modern electronic components have long lives.




Computers are designed to make maintenance easy.




Automation

Computer is an automatic machine.




Automation is the ability to perform a given task automatically. Once the
computer receives a program i.e., the program is stored in the computer memory,
then the program and instruction can control the program execution without human
interaction.




Reduction in Paper Work and Cost

The use of computers for data processing in an organization leads to reduction
in paper work and results in speeding up the process.




As data in electronic files can be retrieved as and when required, the problem
of maintenance of large number of paper files gets reduced.




Though the initial investment for installing a computer is high, it
substantially reduces the cost of each of its transaction.




Disadvantages of Computers

Following are certain disadvantages of computers.




No I.Q.

A computer is a machine that has no intelligence to perform any task.




Each instruction has to be given to the computer.




A computer cannot take any decision on its own.




Dependency

It functions as per the user’s instruction, thus it is fully dependent on
humans.




Environment

The operating environment of the computer should be dust free and suitable.




No Feeling

Computers have no feelings or emotions.




It cannot make judgment based on feeling, taste, experience, and knowledge
unlike humans.








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SUNDAY, 4 DECEMBER 2022


INFORMATION TECHNOLOGY










Information technology (IT) is the use of computers to store, retrieve,
transmit, and manipulate dataor information. IT is typically used within the
context of business operations as opposed to personal or entertainment
technologies.IT is considered to be a subset of information and communications
technology (ICT). An information technology system (IT system) is generally an
information system, a communications system or, more specifically speaking, a
computer system including all hardware, software and peripheral equipment
operated by a limited group of users.






Humans have been storing, retrieving, manipulating, and communicating
information since the Sumerians in Mesopotamia developed writing in about 3000
BC,but the term information technology in its modern sense first appeared in a
1958 article published in the Harvard Business Review; authors Harold J. Leavitt
and Thomas L. Whisler commented that "the new technology does not yet have a
single established name. We shall call it information technology (IT)." Their
definition consists of three categories: techniques for processing, the
application of statistical and mathematical methods to decision-making, and the
simulation of higher-order thinking through computer programs.




The term is commonly used as a synonym for computers and computer networks, but
it also encompasses other information distribution technologies such as
television and telephones. Several products or services within an economy are
associated with information technology, including computer hardware, software,
electronics, semiconductors, internet, telecom equipment, and e-commerce.




Based on the storage and processing technologies employed, it is possible to
distinguish four distinct phases of IT development: pre-mechanical (3000 BC –
1450 AD), mechanical (1450–1840), electromechanical (1840–1940), and electronic
(1940–present).This article focuses on the most recent period (electronic). 


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  What is mobile technology? Mobile technology is technology that goes where the
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