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:
“And, fathers, do not provoke your children to anger, but bring them up in the discipline and instruction of the Lord.”
—Bible: New Testament, Ephesians 6:4.
“bars of that strange speech
In which each sound sets out to seek each other,
Murders its own father, marries its own mother,
And ends as one grand transcendental vowel.”
—Randall Jarrell (1914–1965)