这个时钟是用汇编语言开发的，针对8086芯片而创造的。不仅可以作为时钟，而且可以当成是定时器，具有8个不同时间的定时，在定时时间到达后，就可以给相应的端口输出高电平-This clock is the development of assembly language for 8086 chip created. Not only can serve as a clock, but also as the timer, with eight different times from time to time, in the regular time, you can port to the appropriate output high