Classification of Instruction Sets
A complex instruction set computer (CISC) has many specialized instructions, which may only be rarely used in practical programs. A reduced instruction set computer (RISC) simplifies the processor by only implementing instructions that are frequently used in programs; unusual operations are implemented as subroutines, where the extra processor execution time is offset by their rare use. Theoretically important types are the minimal instruction set computer and the one instruction set computer but these are not implemented in commercial processors. Another variation is the very long instruction word (VLIW) where the processor receives many instructions encoded and retrieved in one instruction word.
Read more about this topic: Instruction Set
Famous quotes containing the words instruction and/or sets:
“I turn my gaze
Back to the instruction manual which has made me dream of
Guadalajara.”
—John Ashbery (b. 1927)
“We love the indomitable bellicose patriotism that sets you apart; we love the national pride that guides your muscularly courageous race; we love the potent individualism that doesn’t prevent you from opening your arms to individualists of every land, whether libertarians or anarchists.”
—Tommaso Marinetti (1876–1944)