Information or data that is entered into a computer is called input. It sends data and instructions to the Central Processing Unit (CPU).

It is the sequence of actions taken on data to convert it into information which is meaningful to the user. It can be calculations, comparisons or decisions taken by the computer.

It makes processed data available to the user. It is mainly used to display the desired result to the user as per input instructions.

It stores data and programs permanently. It is used to store information during the time of program execution and possible to get any type of information from it.

The computer can process data very fast at the rate of millions of instructions per second.

Computers provide a high degree of accuracy. They respond to the user as per the input instructions.

Computers are capable to store huge amount of data which depends on the capacity of hard disk

Computers can do different types of work simultaneously. They can perform multiple tasks at a same time.

Once the instruction to do any work is given to the computer, the computer does its work automatically by itself.

Unlike human beings, a computer is free from monotony, tiredness, lack of concentration, etc. and can work for hours without creating any errors.

Leakage of information is reduced by creating login system with password protection

Computers are more reliable than human beings. Computers always produce exact results. The possibility of errors occur only if the input is wrong, i.e. the computers never make mistakes of their own accord

Computers have the ability to automatically configure a new hardware and software component.

Computers are used in bank for electronic money transfer, making deposits,voucher, bank sheet, etc

Computer is a very effective tool which can be used for teaching and learning,result processing, student data processing,notes preparation, etc

Different types of entertainment fields such as multimedia, film making with animation, graphics, audio and visual design are done with the help of computer

Computers are used for preparing reports, storing/deleting reports, updating reports, etc. in office.

Computers are used in the different fields of advertisement such as business advertisement, film advertisement,education advertisement, etc

Computers are used in business for accounting, keeping all records up-to date, etc

Microcomputer

Minicomputer

Mainframe computer

Supercomputer

Analog Computer

Digital Computer

Hybrid Computer

General Purpose Computer

Special Purpose Computer

It is the collection of physical elements that constitutes a computer system. It is a comprehensive term for all the physical parts of a computer. e.g. Display screens, discs, keyboards, etc.

It is a set of programs and procedures. Software tells the hardware what to do and how to accomplish a task. e.g. Web browsers, word processors, etc

Unprocessed raw facts and figures, like numbers, text on piece of paper, are known as data

When data is processed, organised, structured or presented in a given context so as to be useful, then it is called information.

It is a command given to a computer in the computer language by the user

It is a set of instructions given to a computer in order to perform some task