RISC and CISC Processors

RISC Architecture

• A RISC ( Instruction Set Computers) processor can only decode a small number of
• A RISC processor has a design so is easier to design and manufacture.
• A RISC processor processes one instruction per (= machine cycle).
• In a RISC processor: 1 instruction = 1 FDE Cycle = Clock Cycle
• Software is more complex to write with a RISC processor.
• Typical Use: (e.g. Washing Machines, GPS SatNav, mobile phones etc…)

CISC Architecture

• A CISC ( Instruction Set Computers) processor can decode a larger number of instructions.
• A CISC processor has a complex design/.
• A CISC processor processes one instruction using clock cycles (= machine cycles).
• In a CISC processor: 1 instruction = 1 FDE Cycle = Clock Cycles
• is easier to write with a CISC processor.
• Typical Use: , Laptop