Operating_systems-page12

Operating_systems-page12 - Jelena Mamenko Operating Systems...

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Jelena Mamčenko Operating Systems Lecture Notes on Operating Systems 12 Intel 80486DX2 microprocessor in a ceramic PGA package A central processing unit ( CPU ), or sometimes simply processor, is the component in a digital computer that interprets instructions and processes data contained in computer programs. CPUs provide the fundamental digital computer trait of programmability, and are one of the necessary components found in computers of any era, along with primary storage and input/output facilities. A CPU that is manufactured using integrated circuits is known as a microprocessor. Since the mid-1970s, single-chip microprocessors have almost totally replaced all other types of CPUs, and today the term "CPU" is usually applied to some type of microprocessor. The phrase "central processing unit" is, in general terms, a description of a certain class of logic machines that can execute complex computer programs. This broad definition can easily be applied to many early computers that existed long before the term "CPU" ever came into
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This note was uploaded on 12/29/2011 for the course CSE 362 taught by Professor Mavin during the Spring '09 term at SUNY Stony Brook.

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