R

RISC

Definition: Reduced Instruction Set Computer. Small, uniform instruction set. Each instruction does one simple operation, executes in one cycle. Memory access limited to dedicated load/store instructions.

Example: ARM. Multiplying register by memory value needs two instructions:

1
LDR R1, [mem]   ; load value into register
2
MUL R0, R0, R1  ; multiply registers

Related Terms: CISC