Complex Instruction Set Computing

A complex instruction set computer (CISC, /ˈsɪsk/) is a computer where single instructions can execute several low-level operations (such as a load from memory, an arithmetic operation, and a memory store) and/or are capable of multi-step operations or addressing modes within single instructions. The term was retroactively coined in contrast to reduced instruction set computer (RISC).

Examples of CISC instruction set architectures are System/360 through z/Architecture, PDP-11, VAX, Motorola 68k, and x86.

Famous quotes containing the words complex, instruction and/or set:

    In the case of all other sciences, arts, skills, and crafts, everyone is convinced that a complex and laborious programme of learning and practice is necessary for competence. Yet when it comes to philosophy, there seems to be a currently prevailing prejudice to the effect that, although not everyone who has eyes and fingers, and is given leather and last, is at once in a position to make shoes, everyone nevertheless immediately understands how to philosophize.
    Georg Wilhelm Friedrich Hegel (1770–1831)

    I turn my gaze
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    John Ashbery (b. 1927)

    Here did she fall a tear. Here in this place
    I’ll set a bank of rue, sour herb-of-grace.
    Rue even for ruth here shortly shall be seen
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    William Shakespeare (1564–1616)