An indicator, usually a single binary bit, whose state is used to inform a later section of a program that a condition, identified with flag, had occurred. A flag can be both softwareand hardware-implemented.

• 通常由一个二进制位组成的指示符，它的状态用来通知一个程序的后面的某一部分，由指示符所标识的以及由它所指定的状态业已发生。标志可由软件实现，也可由硬件实现。