Top Definition
Complex Instruction Set Chip:

CISC is a chip arcitecture that supports a complex instruction set. They are mainly used in desktop computers. While they operate at a higher frequency than RISC chips, they can't complete as many instructions per cycle as RISC chips can. There have been endless debates about whether risc or cisc chips are better, cost/power comparisons, etc.
All windows and mac computers use CISC chips.
by Weapongod30 November 06, 2007

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