Classification of Computers

classification of computers

Computers are classified according to the following criteria:

Criteria-I: According to the purpose it is used

(i) Special Purpose Computers:

  Special purpose computers are single purpose computers. These computers are dedicatedly used to serve only that purpose. Example- speedometer, thermometer, sphygmomanometer, barometer etc.

(ii) General Purpose Computers:

  General purpose computers are multi-purpose computers These computers are versatile used to serve more than one purposes. Example- Desktop, laptop, palmtop etc.

Criteria-II: According to signal It uses to represent and process its data

(i) Analog Computers:

  Analog computers are special purpose computers. By analog signal, we mean a continuously varying signal. These computers use some physical parameters such as speed, temperature, pressure etc. to generate the necessary analog signal. Example- speedometer, thermometer, sphygmomanometer, barometer etc.

 

(ii) Digital Computers:

  Digital computers are general purpose computers. By digital signal, we mean a discrete signal. Discrete signals are two states such as high(1) and low(0) signals. These computers use these two states to represent and process its data. Example- Desktop, laptop, palmtop etc.

(iii) Hybrid Computers:

  Hybrid computers use both an analog signal and digital signal to represent and process its data. These computers are rarely used in our daily life. They can be used on the battlefield, space, weapon testing, research etc.

Criteria-III: According to size and processing power digital computers

(1) Micro-computers:

  Micro-computers are microprocessor-based computers. That is, the CPU or processor of a micro-computer is called a microprocessor. These computers are used in home, office, academic institute, research, business and so on.

(2) Mini-computers:

  Mini-computers are larger in size and higher in processing power than micro-computers. These computers are used in industry to control the quality of products. These can also be used in research and business.

(3) Mainframe Computers:

  Mainframe computers are the largest commercial purpose computers. These computers are multi-user computers. That is, here more than one user can use the single mainframe (CPU) in the time-sharing basis. These computers are used to handle very large database. These can also be used in research.

Mainframe Computers:
Mainframe Computers:

(4) Super-computers:

  Super-computers are largest in size and highest in processing power than all other types of computers. These computers are not frequently used in our daily life. These can be used in satellite, weather forecasting, weapon testing, battlefield, game playing and so on.

you are reached

Special Purpose Computers
what is Analog Computers,
what is Digital Computers,
what is Hybrid Computers,
what is Micro-computers,
what is Mini-computers,
what is Mainframe Computers,
what is Super-computers,

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