microprocessor
Complete computer central processing unit contained on a single integrated circuit, or chip. The appearance of the first microprocessor in 1971 designed by Intel for a pocket calculator manufacturer heralded the introduction of the microcomputer. The microprocessor has led to a dramatic fall in the size and cost of computers, and dedicated computers can now be found in washing machines, cars, and so on. Examples of microprocessors are the Intel Pentium family and the IBM/Motorola PowerPC, used by Apple Computer.
The earliest chips could process about 60,000 instructions per second; by 2006 they were capable of processing 27,100 million instructions per second.
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