The Computer have been classified into three categories:-
- Digital C0mputers
- Analog C0mputers
- Hybrid C0mputers
* Digital C0mputer:- The digital computer work upon discontinuous data. They convert the data into digits( binary 0 and 1) and all operations are carried out on these digits at extremely fast rates. A digital C0mputer basically knows how to count the digits and add the digits. Digital C0mputer are much faster than Analog C0mputers and far more accurate. Digital C0mputer are mainly used for business and scientific applications.
Digital C0mputers can further be classified in two ways:-
- Purpose wise
- Size and performance wise
* Analog C0mputers:- In analog C0mputers, continuous quantities are used. Computation are carried out with physical quantities such as voltage, length, current, temperatures etc. The devices that measure such quantities are analog devices ex., voltmeter ammeter. Analog C0mputers operate by measuring rather than counting. Analog C0mputers are mostly used in engineering and scientific application. An electronic weighing scale is an example of analog C0mputers.
* Hybrid C0mputers:- Hybrid C0mputers utilize the best quality of both the digital and analog computers. In these C0mputers some calculations
take place in analog manner and rest of them take place in digital manner. Hybrid computers are best used in hospitals where analog part is responsible for measurements of patients heart beat, blood pressure etc and operation are carried out by digital fashion to monitor patients vital signs. Hybrid C0mputers are also used in wheather forecasting.