RISCperiaatteita

RISCperiaatteita refers to the fundamental principles of Reduced Instruction Set Computing (RISC). RISC is a microprocessor design philosophy that aims to simplify the instruction set of a CPU. The core idea is to have a smaller, highly optimized set of instructions that can be executed very quickly, often in a single clock cycle. This contrasts with Complex Instruction Set Computing (CISC), which features a larger and more complex set of instructions, where a single instruction might perform multiple operations.

Key RISC principles include a large number of registers to hold data, which reduces the need to access main memory frequently. Instructions are typically fixed-length and load-store architecture, meaning that data manipulation operations only occur on data held in registers, and explicit load and store instructions are used to move data between registers and memory. Pipelining is heavily utilized in RISC architectures to improve instruction throughput by overlapping the execution of multiple instructions. This approach allows for faster overall execution speeds for common operations, although it may require more instructions to perform complex tasks compared to CISC. Examples of RISC architectures include ARM, MIPS, and PowerPC.