"It is a machine that takes inputs of different instructions and display output on the screen according to the user requirements"

Computer is basically a combination of hardware and software; all peripheral devices attached to the computer like monitor, printer, scanner and internal circuitry like cables, VGA card, and sound card. Software consists of data and instructions. The main processing unit of the computer is called CPU (Central Processing Unit) that performs all the logical functions and handover results to the Monitor (Display Unit) to display for the user to see the output.

Different types of computers exist based on their strength, processing ability and storage capability.

This type of computers include systems that are for general purpose and for business needs. They are usually called PC’s (Personal Computers) based on the microprocessor. Examples are desktop computers, laptop, notebook etc

Basically server runs a network of computers and optimizes services to the other computers interlinked with that server. Example File Server, Print Server, Chat Server etc.

This device is a very powerful microcomputer. It is designated with high speed, large storage capacity and additional memory. Workstation hosts those application that needs powerful processing like complex scientific calculations graphics related tasks and game development.

This machine is used by companies or business where thousands of instructions executes simultaneously and are done in a limited time. Workers are connected with each other and working on the same data. These machines are very huge and are very rarely used.

These computers are very powerful from all other computers in terms of strength and expense. Usually it is a very large computer but some time some other big computers work parallel to do a heavy task. Supercomputers are doing the great job of tasks that others computers don’t have the capability to do so. It performs massive amount of scientific calculations, weather forecasting, critical decryption of data, testing for engineering tasks.

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