文件名称：简单多任务任务高度
文件大小：340KB
文件格式：PDF
更新时间：2014-12-04 07:28:45
简单多任务 任务高度器 操作系统 OS
简单多任务 任务高度器 操作系统 OS Almost all embedded systems are event-driven; most of the time they wait for some event such as a time tick, a button press, a mouse click, or the arrival of a data packet. After recognising the event, the systems react by performing the appropriate computation. This reaction might include manipulating the hardware or generating secondary, “soft” events that trigger other internal software components. Once the event-handling action is complete, such reactive systems enter a dormant state in anticipation of the next event.1