An electronic device which processes the data given as input and delivers the result as output is computer. There are a total of five computer generations, each new generation gave new functions and improvements. Four types of computers are, super computer, mainframe computer, workstation and microcomputer. The devices related are classified hardware and software. Hardware is the physical parts belong to the system, like monitor, Central Processing Unit (CPU), keyboard, mouse, motherboard, RAM, printer etc. Software is an interface to interact with user and the system which is a group of programming instructions. A computer system is complete only when hardware and software perform tasks together. Uses include storage of data, communication, entertainment, in banking, for office related works, in education, in government sectors and so on. High speed, accuracy, large storage, multitasking, data security are advantages. The topic is described in detail in the powerpoint presentation.

Suriya Stephen

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