八路彩灯控制器的设计.数字钟的主体是计数器,它记录并显示接受到的秒脉冲个数,其中秒和分为模 60 计数器,小时为模 24 计数器,分别产生 2 位 BCD 码-8 lights the controller design.A digital clock are the subject of counter, it recorded and display to receive the number of second pulse, including seconds and divided into die 60 counter, hours for mould and counter, generate two BCD