What is computer its classification and characterstics?
Answers
According to power and size,computers are divided into the following;Microcomputers, minicomputers, supercomputers, mainframe computers and mobile computers. Microcomputers.They are smaller and cheaper compared to mainframe and supercomputers They are also less powerful.
The characteristics of computers that have made them so powerful and universally useful are speed, accuracy, diligence, versatility and storage capacity.
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A computer is a fast electronic device, processing the Input data according to the Instructions given by the Programmer/User and provides the desired information as an output.
Characteristics of Computer:-
(1) Speed: - A computer is very fast device. It can perform large amount of work in a few seconds. Where
(2) Accuracy :– The computer is 100% accurate and capable to perform arithmetical calculation and logic operations with the same accuracy. It can never make mistakes. All mistakes are done by users. The cause of errors may be due to inaccurate feeding data or due to wrong setting of the programmer.
(3) Diligence :– A computer can operate twenty four hours continuously without taking any rest. It has no
feelings or no emotions, if you work continuously for 3 hours, you feel lack of concentrate but a computer is free from these and you will get the result you want with the same speed and same accuracy.
(4) Versatility :– Versatility is one of the most wonderful features about the computer. It can do multiple works at a same time. It also used in data processing jobs, weather fore casting, ticket reservation purpose, multimedia designing, animations, accountancy etc.
(5) High Memory :– computer has made more memory or storage capacity than human beings. It can store millions of data and instructions, which can be retrieved and recalled even after a number of years. This is not possible in case of human brain.