by 
The Curious Bag
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There are many parts inside your computer and the microprocessor, or CPU, is one of them most important. The microprocessor determines many things about how your computer operates.
History
The first microprocessor for use in a computer was invented by Ted Hoff in 1971. Two other chips were invented at approximately the same time for a calculator and a fighter jet.
Function
The microprocessor is the brain of the computer. It performs programs, processes data, does calculations and carries out instructions.
Size
Size is one reason a CPU is important. The first chip in 1971, at 1/8-by-1/16 of an inch, was as powerful as a 1946 computer that weighed 30 tons.
Speed
The faster the clock speed of a microprocessor is, the faster your computer generally can work. Other components can affect speed.
Performance
The MIPS rating is how many millions of instructions per second your computer can do. The more instructions the more powerful and efficient it operates.
Source:
Invention of the Microprocessor
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