Components Of A Modern Computer

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1. What is a Computer?

Computer is an advanced electronic device that takes raw data as input from the user and processes these data under the control of set of instructions (called program) and gives the result (output) and saves output for the future use. It can process both numerical and non-numerical (arithmetic and logical) calculations. The basic components of a modern digital computer are: Input Device, Output Device, and Central Processor. A Typical modern computer uses LSI Chips.

2. History or Background of Computer:
Charles Babbage is called the "Grand Father" of the computer. The First mechanical computer designed by Charles Babbage was called Analytical Engine. It uses read-only memory in the form of punch cards. Four Functions about computer are:

|accepts data |Input | |processes data |Processing | |produces output |Output | |stores results |Storage |

Input (Data):
Input is the raw information entered into a computer from the input devices. It is the collection of letters, numbers, images etc. Process:
Process is the operation of data as per given instruction. It is totally internal process of the computer system. Output:
Output is the processed data given by computer after data processing. Output is also called as Result. We can save these results in the storage devices for the future use.

First Generation Computers (1940s – 1950s)

First electronic computers used vacuum tubes, and they were huge and complex. The first general purposes

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