Computers ar classified consistent with the sort of knowledge that they're designed to the method. These form of pc :
1. Analog Computers
2. Digital Computers
3. Hybrid Computers


1. Analog computers

The analog computer accepts, processes, and generates continuous knowledge.

Computation is meted out with physical quantities like length, voltage, current, pressure, etc.

for example:-

  • Voltmeter , ammeter, potentiomenter, thermoeter.
  • A speed indicator within the automobile is an associate degree example of the analog computer that unendingly measures the speed of the shaft revolution of the automobile and so converts this through its own mechanism into Kms/Hr.
ANALOG COMPUTERS 
Limitation of Analog computers:-
  • They do not have logical facilities afforded by programming.
  • These computers ar relatively slow and fewer correct.
  • They cannot store knowledge in massive quantities.
  • The cost of implementation of computation is incredibly high.
  • As analog data is mechanical, it possesses restricted accuracy.

2.  Digital computers

The computer accepts, processes, and produces data during a discreet kind, thus, digital computers ar extraordinarily reliable.
The definition of a {digital pc|computer|computing machine|computing device|data methodor|electronic computer|information processing system} is that the most ordinarily used form of computer and is employed to process data with quantities exploitation digits, sometimes exploitation the binary mathematical notation. associate degree example of a computer may be a MacBook.

These digital computers are broadly speaking classified into four classes supported their size and type:-

    • Micro Computer:-

A digital computer may be a tiny, comparatively cheap pc with a microchip as its central process unit (CPU). It includes a microchip, memory.
EXAMPLE:-

Desktop computer
Smartphone 
Notebook
Laptop












  • Mini Computer:-

A mini pc a tiny low all-purpose pc with its computing power larger than microcomputers. it's sometimes designed to at the same time handle the process desires of multiple users. These computers are time-sharing systems. they're quicker and a lot of powerful than microcomputers. they supply the power with a lot of storage capability and communication links between users.

Most of the programming languages ar out there on these machines. they're employed in faculties, universities, analysis organizations, industries, etc. for multi-user and interactive applications.
These computers are used for:-
  • Sophisticaticated real prong industrial controls and interactive engineering style work.
  • Biomedical management for experipheral watching.
  • Communication and generation, peripheral management like knowledge concentrators, satellite peripherals.
  • Control of power generation, organic compound systems, testing of kit, and devices.
EXAMPLE:- Wipro S-68030V
                        HCL Magnum

    • Mainframe Computer:-


    Mainframes are powerful computers used for big information-processing jobs. they're primarily utilized by government establishments and huge firms for tasks like census, business and shopper statistics, enterprise resource designing, and monetary dealings process. conjointly referred to as "big iron".

    EXAMPLE:-MEDHA Series, DEC & ICL 39, CYBER 170 etc.

      • Super pc.

    The mainframe is that the quickest scheming device ever fabricated. it's a high speed, superior parallel processing system.

    It contains quite one processor, hence, quite one job is often meted out at the same time. Also, data processing technologies facilitate to unravel complicated issues by dividing it into smaller issues which will be appointed to totally different processors of the system and processed in parallel.

    The mainframe is quicker and a lot of powerful than mainframe computers. The processing speed of mainframe is measured in 'flops' i.e. floating-point operations per second. Word length of those computers is sixty-four or a lot of. These are the foremost pricy computers.

    These computers are typically used for complicated scientific applications. These are necessary tools in fashionable science. they're conjointly used for planning robots, aircraft, safer vehicles, prognostication, earthquake prediction, weapons analysis, atomic aperient, developing antiviral medicine, area exploration, etc.
    Most supercomputers are utilized by government agencies. CRAY XMP-14 mainframe system is being employed by the meteoric Department in India.

    3. Hybrid Computers

    Desirable options of digital and analog devices are mixed to provide Hybrid computers.

    It is quicker than associate degree analog computer however a lot of slower than digital computers. These realize applications in special areas solely.
    EXAMPLE:-
    • Patient watching System.
    • Flight Simulators for coaching airplane pilots.
    • Missile steerage pc.
    • Petroleum Distillation watching System