Monday, February 15, 2010

Basic Computer

What is computer?

Computer is a faster working electronic, programmable, data processing device. Computer cannot do anything independently. It acts on the instructions from the user and processes it, gives the result in the desired form.

Application of computer
Some of the applications of the computer are given below.

Maintenance of accounts and producing reports.
Purchasing and stock control in super markets and factories.
Library book issue management and information retrieval.
Computer aided diagnosis of diseases.
Bank accounts and instant customer service.
Organization of examinations and tabulation of results.
Computer aided design of building, plants, and machinery.
Weather forecasting.
Computer controlled machines.
Computer aided learning.
Word processing and desk top publishing.
Crime detection – finger print processing and image processing.

Computer system characteristics:

Perform complex and repetitive calculations rapidly and accurately.
Storage large amounts of data and information for subsequent manipulations.
Hold a program of a model which can be explored in many different ways.
Make decisions.
Provide information to the user.
Automatically correct or modify – by providing signals – certain parameters of a system under control.
Draw and print graphs, and
Converse with users through terminals.

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