输出电路的设计，包括驱动继电器，驱动蜂鸣器霹雳灯，七段LED数码管，BCD拨码开关，多个按钮开关，程序5是跑马灯，4*4键盘与七段LED数码管，程序6是各种中断程序7中涉及闪烁灯的中断和查询方式，频率发生器，频率计和看门狗定时器，程序8涉及点对点互传，多处理器通信，程序9涉及简易电子琴，快乐点唱机，生日快乐歌等，程序10涉及用延迟子程序产生驱动信号，用定时器产生驱动信号。程序11涉及ADC温控实验，程序12涉及LED点阵的程序程序13涉及LCD文字显示和自定义字符图案-Design output circuit includes a drive relay, buzzer driving thunderbolt lights, seven-segment LED digital tube, BCD DIP switch, button switches, the program is 5 Marquee, 4* 4 keyboard and seven-segment LED digital tube program 6 is involved in a variety of interrupt program 7 interrupt and polling flashing lights, frequency generator, frequency meter and watchdog timer, the program involves 8-point pass each other, multiprocessor communication program involving 9 simple flower, be happy player, happy birthday song, etc., involved in the program 10 generates a drive signal delay subroutine, the timer generates a drive signal. ADC program involving 11 temperature test program involving 12 program LED dot matrix LCD character display program involving 13 and custom character pattern