单片机------五路输入病房呼叫系统

　　1．用1~5个开关模拟5个病房的呼叫输入信号，1号优先级最高；1~5优先级依次降低；

　　2．用一个数码管显示呼叫信号的号码；没信号呼叫时显示0；又多个信号呼叫时，显示优先级最高的呼叫号（其它呼叫号用指示灯显示）；

　　3．凡有呼叫发出5秒的呼叫声；

　　4．对低优先级的呼叫进行存储，处理完高优先级的呼叫，再进行低优先级呼叫的处理（附加）。-SCM------ Wǔ input unit call system 1. 1 to 5 with 5 wards switch analog input call signal, the highest priority No. 1　1 to 5 followed by lower priority　2. LED display with a number of call signals　not signal call is shown 0　has multiple signal call, display the highest priority call number (other call number display with lights)　3. Where a call issued by 5 seconds of the call sound　4. Low priority call on the store, processed high-priority call, then low-priority call handling (additional).