1.2.2 Characteristics Of Computer System

SPEED: As you know computer can work very fast. It takes only few seconds for calculations that we take hours to complete. You will be surprised to know that computer can perform millions (1,000,000) of instructions and even more per second. Therefore, we determine the speed of computer in terms of microsecond (one millionth 10 -6 of a second.) or nanosecond (one billionth (10 -9 of a second).It is a common measurement of read or write access time to random access memory ( RAM ). From this you can imagine how fast your computer performs work.

ACCURACY: Since Computer is programmed, so whatever input we give it gives result with accurately.The degree of accuracy of computer is very high and every calculation is performed with the same accuracy.

STORAGE: Computer can store mass storage of data with appropriate format. Today’s computers can store large volumes of data. A piece of information once recorded (or stored) in the computer, can never be forgotten and can be retrieved almost instantaneously. The Computer has an in-built memory where it can store a large amount of data. You can also store data in secondary storage devices such as Pen Drive , hard disk, compact disk or DVD which can be kept outside your computer and can be carried to other computers.

DILIGENCE: Computer can work for hours without any break and creating error. Unlike human beings, computers are highly consistent. They do not suffer from human traits of boredom and tiredness resulting in lack of concentration. Computers, therefore, are better than human beings in performing voluminous and repetitive jobs.

VERSATILITY: We can use computer to perform completely different type of work at the same time. Computers are versatile machines and are capable of performing any task as long as it can be broken down into a series of logical steps. The presence of computers can be seen in almost every sphere – Railway/Air reservation, Banks, Hotels, Weather forecasting and many more.

POWER OF REMEMBERING: It can remember data for us for a very short time and for future uses.

NO IQ: Computer does not work without instruction.

NO FEELING: Computer does not have emotions, knowledge, experience, feeling.