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Define CISC
Complex Instruction Set Computer an architecture that supports a large number of completed instructions, one instruction usually takes more than 1 clock cycle
Define RISC
Reduced Instruction Set computers, an architecture that supports only a small number of very small instructions, one instruction run over one FDE cycle
Feature of RISC
Simple instruction, fewer instructions, fewer addressing modes, only LOAD and STORE instructions can access memory, Processor hardware is more simple
Features of CISC
Complex instructions, a large range of instructions, many addressing modes, many instructions can access memory, Processor more complex
Adv of CISC
Quicker to code, compiler has very little work to do to translate a high level language into machine code, code is relative short, very little RAM is required to store the instructions
Adv of RISC
The hardware is simpler to build with fewer curcuit needed to carry out complex Instruction, each instruction takes same amount of time(piplining), RAM is now cheap, RISC uses more RAM and software allows better performance processors at less cost
