microcommand
Microcommand refers to a fundamental, elementary operation within a computer's central processing unit (CPU). These are the simplest instructions that a CPU can execute, forming the building blocks for more complex operations. When a CPU fetches and decodes an instruction from memory, it breaks that instruction down into a sequence of microcommands. Each microcommand manipulates the CPU's internal registers, arithmetic logic unit (ALU), or control signals.
The sequence of microcommands required to execute a single machine instruction is stored in a special memory
The concept of microprogramming was developed to simplify the design of complex instruction sets. Instead of