微波炉定时器集成电路的设计　　1、 控制状态机：工作状态状态转换。

　　2、 数据装入电路：根据控制信号选择定时时间、测试数据或完成信号的装入。

　　3、 定时器电路：负责完成烹调过程中的时间递减计数和数据译码供给七段数码显示，同时还可以提供烹调完成时间的状态信号供控制状态机产生完成信号。

-microwave timer IC design a control state machine : state of the state conversion work. 2, data loading circuit : According to choose control signal timing, or the completion of the test data signal load. 3, timer circuit : responsible for the completion of the cooking process of counting and time decreasing supply data decoding digital paragraph 107, while cooking can also provide time to complete state control signal for the state machine generated signals.