Following are the important characteristics of a computer:
1. Speed
Computers work at a very high speed and are much faster than humans. A second is very large time period time for computer. A computer can perform billions of calculations in a second. The time used by a computer to perform an operation is called the processing speed. Computer speed is measured in Mega Hertz (MHz) or Giga Hertz (GHz).
2. Storage
A computer can store large amounts of data permanently. Users can use this data at any time. We can store any type of data in a computer. Text, graphics, pictures, audio and video files can be stored easily. The storage capacity of the computer is increasing rapidly.
3. Processing
A computer can process the given instructions. It can perform different types of processing like addition, subtraction, multiplication and division. It can also perform logical functions like comparing two numbers to decide which one is the bigger etc.
Accuracy means to provide result without any errors. Computer can process large amount of data and generate error-free results. A modern computer performs millions of operations in one second without any error.
5. Recalling
A computer can recall the stored data and information as and when required. The data stored in the computer can be used at a later time. The computer can recall the required data in a few seconds.
6. Control Sequence
A computer works strictly according to the given instructions. It follows the same sequence of execution that is given in a program.
7. Consistency
Computer works in a consistent way. It does not lose concentration due to heavy work. It does not become tired or bored. Computer performs all jobs with equal attention.
8. Communication
Most computers today have the capability of communicating with other computers. We can connect two or more computers by a communications device such as modem. These computers can be share data, instructions, and information. The connected computers are called network. We can communicate with other people in the world using network like Internet.
9. Versatile
A computer can perform different types of task. We can use a computer in hospital, bank or at home. We can use it for calculating our budget or can play games. A variety of facilities are available through computers.
10. Cost Reductions
We can perform a difficult task in less time and less cost. For example, we may have to hire many people to handle an office. The same work can be performed by single person with the help of computer. It reduces the cost.
