Instruction Decoder
In CPU design, the instruction decoder is the part of the CPU that converts the bits stored in the instruction register -- or, in CPUs that have microcode, the microinstruction -- into the control signals that control the other parts of the CPU.
A simple CPU with 8 registers may use 3-to-8 logic decoders inside the instruction decoder to select two source registers of the register file to feed into the ALU as well as the destination register to accept the output of the ALU. A typical CPU instruction decoder also includes several other things.
Read more about this topic: Decoder
Famous quotes containing the word instruction:
“One year, I’d completely lost my bearings trying to follow potty training instruction from a psychiatric expert. I was stuck on step on, which stated without an atom of irony: “Before you begin, remove all stubbornness from the child.” . . . I knew it only could have been written by someone whose suit coat was still spotless at the end of the day, not someone who had any hands-on experience with an actual two-year-old.”
—Mary Kay Blakely (20th century)