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Next, the Future.....

  
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   April 2, 2009
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COMPUTER

 

Commonly Operating Machine Particularly Used for Trade, Education & Research

A computer is a machine that manipulates data according to a list of instructions. Computer can access & process data millions of times faster than humans can. A computer can store data & information in its memory, process them & produce the desired results. Computer can do a lot of different tasks such as playing games, railway reservation etc.

 

 

 

LIMITATIONS OF A COMPUTER

Lack of decision making power: Computer can’t decide on their own. They do not possess this power which is a great assert of human brings.

IQ Zero: Computers are dumb machines with zero IQ. They need to be told each & every step, however minute it may be.

 
 

 


 

STRENTGHS & WEAKNESSES OF A COMPUTER

SPEED: Computers are much faster as compared to human beings.

HIGH STORAGE CAPACITY: Computers can store a large amount of information in very small space.

ACCURACY: Computers can perform all the calculation & comparisons accurately provided the hardware does not malfunction.

VERSATILITY: Computers can perform repetitive jobs efficiently.

TYPES OF COMPUTER

The computers have been classified into three categories.

Digital Computers - The digital computer work upon discontinuous data. They convert the data into digits & all operations are carried out on these digits at extremely fast rates. Digital Computers are much faster than analog computers. Computers used for business & scientific applications are digital computers.

Analog Computers - In analog computers continuous quantities are used. The main advantage of analog computer is that all calculations take place in parallel & hence these are faster. Analog computers are mostly used in engineering & scientific applications.

Hybrid Computers - In these computers some calculations take place in analog manner & rest of them take place in digital manner. Hybrid computers are used in hospitals where analog part is responsible for measurement of heart beat. They are also used in weather forecasting.