Classification of computers on the basic of signal and Type of Computer

👉 Classification of computers on the basic of signal

Type of computer ;

1.         Digital

2.         Analog computer

3.         Hybrid computer

 👉  Digital :

1.        Micro computer

2.        Main frame computer

3.        Super computer

4.        Mini computer

 👉Digital computer;

The input data is represented by a number. These are used for the logical and arithmetic operations.

 👉Features of digital computer.

·     Accuracy unlimited.

·     Low speed sequential as well as parallel processing.

·     Output is continuous but it is obtained when computations is completed.

·     The digital computers work upon discontinuous data.

·     These computer are used for business and scientific applications.

 👉Analog computer;

The input data is a number, infact it is a physical quantity like time, pressure, speed, velocity.

👉 Features of Analog computer:

·     Approximately 100% Accuracy

·     High speed.

·     Output is continuous.

·     Time is wasted in signal/data transmission.

·     The main advantage of Analog computers is that all calculation take places in payroller and hence these are faster. But the accuracy of Analog computers is poor as compared to digital computers.

·     Analog computers are mostly used  in engineering and scientific application.

·     An electronic weighing scale is an example of Analog computer.

👉Hybrid computer:

The combination of features of analog and digital computer is called hybrid computer. The main examples are central national defense and passenger flight radar system. They are also used to control robots.

 

·     In these computers some calculations take place in analog manner and rest of them take place in digital manner.

·     Hybrid computers are best to use in hospital, where analog part is responsible for measurement to patient’s heart beat, blood pressure, temperature and other vital signs.

·     Hybrid computers  are also used in weather forcasting.

👉Classification of digital computers:

       Digital computers can be generally classified by size and power as follows, through there is considerable overlap.

■ Personal computer : A small, single user computer based on a microprocessor . in addition to the microprocessor, a personal computers has a keyboard for entering data a monitors for displaying information, and a storage device for saving data.

■ minicomputer: A multi-user computer capable of supporting from 10 to hundred of user simultaneously.

■Mainframe : A power multi-user computer capable of supporting many hundreds of or thousands of user simultaneously.

■Supercomputer : An extremely fast computer that can perform hundred of millions of instructions per second.

■Common Functional Areas of computers system:

Now we should move ahead to know actually where we are using computers. Common areas where we use computers are as follows: 

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