RISC and CISC Processors

RISC and CISC Processors

.In this tutorial, we will learn about RISC Processor and CISC Processor and difference between them

RISC Processor

It is known as Reduced Instruction Set Computer. It is a type of microprocessor that has a limited number of instructions. They can execute their instructions very fast because instructions are very small and simple

RISC chips require fewer transistors which make them cheaper to design and produce. In RISC, the instruction set contains simple and basic instructions from which more complex instruction can be produced. Most instructions complete in one cycle, which allows the processor to handle many instructions at same time

In this instructions are register based and data transfer takes place from register to register

CISC Processor

• It is known as Complex Instruction Set Computer.
• It was first developed by Intel.
• It contains large number of complex instructions.
• In this instructions are not register based.
• Instructions cannot be completed in one machine cycle.
• Data transfer is from memory to memory.
• Micro programmed control unit is found in CISC.
• Also they have variable instruction formats.

Difference Between CISC and RISC