CISC :- CISC stands for complex instruction set computer.
RISC :- RISC stands for reduced instruction set computer.
|1.||Complex instruction set computer||Reduced instruction set computer|
|2.||It has large number of instruction||It has small number of instruction of fixed length|
|3.||Complex instruction take multiple clock cycle||Single cycle instruction|
|4.||Complex & variable length instruction||Simple length instruction|
|5.||Less register are used||More register are used|
|6.||Compound addressing mode||Limited addressing mode|
|7.||Required a minimum amount of RAM||Required more RAM|
|8.||Instructions are executed by microprogram||Instructions are executed by hardware|
|9.||Pipelining is difficult||Pipelining is easy|
|10.||Example : PIC microcontroller from microchip, ARM, Power PC etc.||Example : 8085, 8086, 8051 etc.|