preview

Compare Reduced Instruction Set Computer (CISC And Cisc

Better Essays

Compare and contrast reduced instruction set computer (RISC) with the complex Instruction set computer(CISC) [20]
Definitions:

(CISC) The term "CISC" (Complex Instruction Set Computer or Computing) refers to computers designed with a full set of computer instructions that were intended to provide needed capabilities in the most efficient way. Later, it was discovered that, by reducing the full set to only the most frequently used instructions, the computer would get more work done in a shorter amount of time for most applications. Since this was called reduced instruction set computing (RISC), there was now a need to have something to call full-set instruction computers - thus, the term CISC.

These complex instruction set computer …show more content…

Since each instruction type that a computer must perform requires additional transistors and circuitry, a larger list or set of computer instructions tends to make the microprocessor more complicated and slower in operation.

Most RISC designs use uniform instruction length for almost all instructions, and employ strictly separate load/store-instructions.

Throughout the years various suggestions have been made regarding a precise definition of RISC, but the general concept is that of a system that uses a really small, highly optimized set of instructions, rather than a more versatile set of instructions often found in other types of architectures like C.I.S.C, another common trait is that RISC systems use the load/store architecture, which is where memory is normally accessed only through certain specific instructions, rather than accessed as part of other instructions like

Get Access