Occasionally to retrieve an instruction , and its operands from storage prior to its execution 有時(shí)指在執(zhí)行指令之前,從存儲(chǔ)器中取出指令和其操作數(shù)的過(guò)程。
The part of execution in which an operand or instruction is read from main stora ge and written into a control unit or arithmetic unit register 執(zhí)行過(guò)程中的一個(gè)階段所需的時(shí)間,在此期間,計(jì)算機(jī)從主存儲(chǔ)器中取出指令或操作數(shù),并將其存入控制器或運(yùn)算器的寄存器中。