A program step undertaken or executed by a computer, for example, addition, multiplication, extraction, comparison, shift, transfer. The operation is usually specified by the operator part of an instruction.

• 一种由计算机所接受或执行的程序步,例如加、乘、开方、 比较、移位、传送等操作。这些操作通常是由指令的操作码所规定的。