岗位呼叫器的设计与实现

基本功能

1、四个按键模拟四个岗位。

2、当有一个按键按下时，由数码管显示呼叫岗位，蜂鸣器报警。

3、当控制台听到呼叫后，可按下呼叫响应按钮，蜂鸣器停止工作，呼叫批示灯在20S后停止显示。

4、当有多个呼叫岗位同时发生时，用指示灯指明多个呼叫源在同时呼叫，并按优先级顺序由数码管显示多个呼叫岗位。1号呼叫源优先级最高，按顺序4号呼叫源优先级最低。

-Post pager design and realization of the basic functions, four key analog four positions. 2, when there is a button press, digital tube display call positions, buzzer alarm. 3 console hear the call, press the call response button, buzzer stopped working, call indicator light to stop displaying after 20S. Specified by the indicator when multiple call positions simultaneously, more than one source of the call at the same time calls, multiple call positions in accordance with the priority order by the digital display. Source of the call with the highest priority, the source of the call in order on the 4th lowest priority.