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What is a micro processor?

A microprocessor incorporates the functions of a computers central processing unit (CPU) on a single integrated circuit (IC),or at most a few integrated circuits. It is a multi-purpose, programmable device that accepts digital data as input, processes it according to instructions stored in its memory, and provides results as output. It is an example of sequential digital lodgic, as it has internal memory. Microprocessors operate on numbers and symbols represented in the binary numerical system.

How do they work?

How do they work?

A microprocessor -- also known as a CPU or central processing unit -- is a complete computation engine that is fabricated on a single chip. The first microprocessor was the Intel 4004, introduced in 1971. The 4004 was not very powerful -- all it could do was add and subtract, and it could only do that 4 bits at a time. But it was amazing that everything was on one chip. Prior to the 4004, engineers built computers either from collections of chips or from discrete components (transistors wired one at a time). The 4004 powered one of the first portable electronic calculators.