The requirement of real time is very high, all control tasks ;ire classified into relatively independent subprogramme by executive frequency and function to time-sharing execute.
发抓‘制刊-实时性要求很高,将发
所有控制任务,
任务
功能、执行
率、实时性划丫分为相对独立
子程
,
实时性要求,分时执行。