Classification of Computer-Classification on Working System for Competitive Exams

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This Diagram Shows Classification of Computer

Analog Computer – a computer that operates with numbers represented by directly measurable quantities (as voltages or rotations) – compare digital computer and hybrid computer.

  • Analog computer is used to process analog data.
  • Analog data is of continuous nature and which is not separate. Such type of data includes temperature, pressure, speed, weight, voltage, depth etc.
  • Examples of Analog computer are Speedometer of a car, Thermometer etc.
  • Analog computers are faster than other computers.

Digital computer – Digital computer is the most commonly used computer and used to process information with quantities using digits, usually using the binary number system. Ex – MacBook.

  • A digital computer as its name implies works with digits to represent numerals, letters or other special symbols.
  • A digital computer is used to process digital data. It is a discrete data and having only two possible values (0,1)
  • Digital computer provide accurate result but they are slower than analog computer.
  • Analog computer has lack of memory whereas digital computers store information.

Classification on size

Supercomputer – Super computer is the fastest computer. Supercomputers are very expensive and are employed for specialized application that require immense amounts of calculations.

Mainframe computer – A mainframe computer is a very large computer capable of handling and processing very large amounts of data quickly.

They are used by large institutions, such as government agencies and large corporations.

Mini Computer – A computer with processing and storage capabilities smaller than those of a mainframe but larger than those of a micro computer.

Micro computer - A micro computer is a complete computer on a smaller scale and is generally a synonym for the more common term, personal computer or PC, a computer designed for an Individual.

Personal computer - A personal computer (PC) is a small, relatively inexpensive computer designed for an individual user. Every PC is based on microprocessor technology , which allows PC makers to set the entire central processing unit (CPU) on a single chip.

Hybrid Computer – A computer that combines the characteristics of a digital computer and an analog computer by its capacity to accept input and provide output in either digital or analog from and to process information digitally.

  • A hybrid computer and analog computer are combines the best features of both types of computers.
  • For example a petrol pump contains a processor that converts fuel flow measurement into quantity and price
  • Hybrid computer is used in hospitals to measure the heartbeat of the patient.
  • Hybrid Computers are also used in processes of scientific applications or controlling industrial process.

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