noun
microinstruction
Technical computing term for a low-level instruction that controls the internal operations of a CPU.
マイクロ命令はCPUの制御ユニットで実行される。
Microinstructions are executed by the CPU's control unit.
A macroinstruction is a higher-level instruction that may expand into multiple microinstructions.
Compound of マイクロ (micro) + 命令 (instruction), a direct calque of English 'microinstruction'.