Reduced instruction set computer
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Reduced instruction set computing
Reduced instruction set computing, or RISC , is a CPU design strategy based on the insight that simplified (as opposed to complex) instructions can provide higher performance if this simplicity enables much faster execution of each instruction. A computer based on this strategy is a reduced instruction set computer also called RISC.

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Reduced Instruction Set Computer
Reduced Instruction Set Computer (RISC) (engl. für Rechner mit reduziertem Befehlssatz) ist eine Designphilosophie für Computerprozessoren, bei der einfache Befehle eine gut balancierte Pipeline mit schneller Taktung ermöglichen, was RISC-Prozessoren sehr effizient macht. RISC steht im Gegensatz zum CISC-Prozessordesign.

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Reduced Instruction Set Computing

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Reduced instruction set computer
Le microprocesseur à jeu d'instruction réduit ou reduced instruction-set computer en anglais est une architecture matérielle de microprocesseurs. On l'a opposé à la fin des années 1980 et au début des années 1990 à l'architecture CISC (complex instruction-set computer). La sortie d'architectures hybrides comme le Pentium (CISC émulé par du RISC) a mis fin, par disparition de repères, à cette guerre qui était devenue bien plus marketing que technique vers 1990, les techniques ayant évolué de part et d'autre et chacune comparant ses procédés à ceux de l'autre... six ans plus tôt.

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RISC
RISC är en akronym för Reduced Instruction Set Computer (alternativt Load-Store arkitektur som är ett mer korrekt namn). RISC-principerna utvecklades av IBMs Watson Research Center mellan 1975 och 1979 när den första RISC-processorn med namnet 801 levererades.

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RISC
RISC (Reduced Instruction Set Computers) - nazwa architektury mikroprocesorów która została przedstawiona pod koniec lat 70. w teoretycznych pracach na uniwersytecie Berkeley oraz w wynikach badań Johna Cocke z Thomas J. Watson Research Center.

Ówczesne procesory (budowane w architekturze CISC) charakteryzowały się bardzo rozbudowaną listą rozkazów, ale jak wykazały badania tylko nieliczna ich część była wykorzystywane w statystycznym programie. Okazało się np. że ponad 50% rozkazów w kodzie to zwykłe przypisania (zapis zawartości rejestru do pamięci i odwrotnie).


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