C c


    • US Pronunciation
    • US IPA
    • [sisk]
    • /sɪsk/
    • US Pronunciation
    • US IPA
    • [sisk]
    • /sɪsk/

Definitions of cisc word

  • abbreviation Technical meaning of CISC Complex Instruction Set Computer 3
  • noun cisc complex instruction set computer: a computer whose central processing unit recognizes a relatively large number of instructions. 1
  • noun Technical meaning of cisc (CISC) A processor where each instruction can perform several low-level operations such as memory access, arithmetic operations or address calculations. The term was coined in contrast to Reduced Instruction Set Computer. Before the first RISC processors were designed, many computer architects were trying to bridge the "semantic gap" - to design instruction sets to support high-level languages by providing "high-level" instructions such as procedure call and return, loop instructions such as "decrement and branch if non-zero" and complex addressing modes to allow data structure and array accesses to be compiled into single instructions. While these architectures achieved their aim of allowing high-level language constructs to be expressed in fewer instructions, it was observed that they did not always result in improved performance. For example, on one processor it was discovered that it was possible to improve the performance by NOT using the procedure call instruction but using a sequence of simpler instructions instead. Furthermore, the more complex the instruction set, the greater the overhead of decoding an instruction, both in execution time and silicon area. This is particularly true for processors which used microcode to decode the (macro) instruction. It is easier to debug a complex instruction set implemented in microcode than one whose decoding is "hard-wired" in silicon. Examples of CISC processors are the Motorola 680x0 family and the Intel 80186 through Intel 486 and Pentium. 1

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Parts of speech for Cisc


cisc popularity

A common word. It’s meaning is known to most children of preschool age. About 78% of English native speakers know the meaning and use the word.
This word is included in each student's vocabulary. Most likely there is at least one movie with this word in the title.

cisc usage trend in Literature

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