What do you mean by ICT?
OR
What is ICT?
All tools which are used to share information and for communication, comes under ICT. Therefore computer, smart phone, internet, e-mail are the part of ICT family. Today at home, in office ICT has made difficult tasks easier.
Other Topic of this Chapter
What are the ICT tools?
OR
How many tools are there in ICT?
1) Tablet: A tablet is combination of laptop and smart phone. It is small enough to hold in hands and big enough to read books. It is good for watching videos, listening music, and doing simple tasks. It is less powerful than regular computer.
2) Radio: Radio uses radio waves to broadcast audio in long range and internet has made it more powerful. Now all radio stations are broadcasting online. Radio is generally used for listening songs, news, commentary, and weather forecast.
3) Television: TV is old ICT tool which has seen a lot of changes. Earlier radio waves were used to broadcast TV programs. Now digital signals and internet is used to broadcast TV programs which gives high quality picture and sound.
4) E-Mail: E-mail (electronic mail) is the main ICT tool to send message, attachment anywhere in the world. It is the fastest, easiest, and cheapest method of communication for business, government, and administration.
5) Smart Phone: Smart phone is a micro computer which can do all task that a regular computer does. It is small enough to put in our pocket and good enough to perform all tasks. It is used for calling, watching video, listening songs, and internet. Today on the internet, a huge traffic comes from the smart phones.
Chapter 1 – Introduction to IT - ITeS Industries
Chapter 2– Data Entry & Keyboard Skills
Chapter 3 – Digital Documentation
Chapter 4 – Electronic Spreadsheet
Chapter 5 – Electronic Presentation
What are the categories of computers?
 |
| Type of Computers |
According to Purpose:
Analog Computer:
These computer measures continuous changeable
physical quantities like weight, temperature, or speed. These computers need
constant input supply to give output. For example, Thermometer, Speedometer.
Digital Computer:
These computers use digits (0s & 1s,
binary number) to complete a task and give results. These computers give accurate
results. Desktop, Laptop, and Smartphone are the application of digital
computer.
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Hybrid Computer:
This computer is the combination of both analog and digital computer. These computers take analog signal as a input and give digital results. These computers are generally used in research and in hospital.
According to Size:
Micro Computer:
These computers are also called personal
computer which are made of input device, output device, Primary memory,
Secondary memory, and Central Processing Unit (CPU). There are different types
of micro computers,
Desktop: These computers are designed for home and office use.
Laptop: These are portable computer which we can carry anywhere and give three
hours battery backup.
Tablet: These are the combination of phone and laptop which are the size of a
notebook and touch based system.
Smartphone: These are phone which provide additional feature which are given in
laptop or in a desktop.
Mini Computers:
Minicomputers
are bigger than microcomputers, but they are more powerful in term of
processing speed. They can support many users at same time on same
computer. It means they provides multiple-users environment. It is
mainly manufactured for commercial applications. For example: Business
transaction, Database management.
Mainframe Computer:
Mainframe Computers are huge computers which cover entire room. They can store large amount of information, and can perform multitasking with several users working on it. Mainframe computers have many terminals attached with it. It is mainly manufactured for commercial applications. For example: banking, health care, and government.
Super Computer:
A super computer has large number of processors. On the other hand a micro computer has one processor. These processors can perform a complex scientific calculation in a second. A calculation performed by a personal computer in a three weeks, can be completed in a minutes by a super computer. These computers are generally used for scientific research, weather forecasting, and satellite control.
Embedded Computer:
An embedded computer is processor base system which is designed to perform specific tasks. These computers are embedded in a machine. After embedding computers those machines run automatically. For example: Digital Camera, Microwave.
Explain hardware and software with examples.
OR
What is the difference between software and hardware?
OR
Introduction to computer hardware and software.
Computer Hardware:In computer all physical things Which have following properties are called computer hardware:
1) We can see.
2) We can touch.
3) Which is breakable.
4) Which cover space.
5) Which has shape.
For example Keyboard, Mouse, Speaker.
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| Computer Hardware and Software |
Computer Software is a set of instructions which runs on a computer. Without software computer is useless. Software is the interface between Computer Hardware and users.
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