本程序实现了一个序列检测器。当一串待检测的串行数据进入检测器后，若此数在每一位的连续检测中都与预置的密码数相同，则输出“A”,否则仍然输出“B”。-This procedure implements a sequence detector. When a string of serial data to be tested after entering the detector, if the number in each successive detection with the same n