Difference between CISC, RISC and RISC-V
The difference between CISC , RISC and RISC-V lies primarily in the philosophy behind how the processor processes instructions. In a nutshell: CISC does a lot with a single complex instruction, RISC does it with multiple simple instructions, and RISC-V is a modern, open-source variant of RISC. Let's dive into the details below. 1. CISC (Complex Instruction Set Computer) Presumably intended instead of SISC. The CISC philosophy dates back to a time when computer memory (RAM) was incredibly expensive and scarce. The goal was to make programs as compact as possible. How it works: A single instruction can execute an entire sequence of complex tasks (such as loading a number from memory, performing a calculation, and storing it back). Characteristics: Variable instruction length (some instructions are short, others are long). Instructions often take multiple clock cycles to complete. The hardware is complex because it needs to understand all these complicated instructions. Wel...
