starting signal

名词 starting signal:

1. a signal to begin (as in a race)
   同义词：start

1. The status or condition of being ready to run. A program, task, or hardware device that is in a ready condition needs only a start signal in order to begin operation.
   准备就绪即可运行的状态。一个程序、任务或硬件设备在处于就绪状态时，只需要一个起动信号就开始工作。