What Is A Computer

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continuously over a period of time, making exact answers difficult or impossible to obtain. Digital computers are capable of providing exact answers to problems.
The basic concept of a computer is very simple. A computer processes step by step, performing one operation at a time. For example, a computer reads a number from memory, stores it, reads another number from memory, stores it, retrieves the first number, adds it to the second, and writes the answer into memory. This is a computers way of adding two numbers.
The process just described may seem slow and tedious. The average computer, however, can add two numbers in 1/100,000 of a second. The speed at which a computer works is called its capacity. The smaller the physical dimensions of a computer, the quicker data can move through it. For this reason, computer designers are continually seeking to reduce the physical size of their machines. The transistor, the integrated circuit, and the printed circuit board are three of the ...

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