利用DS12887芯片控制比赛时间，实现规定比赛时间内两位选手各自的得分记录，同时利用定时器实现选手停留时间，还可以利用键盘操作实现开始，暂停，复位，蜂鸣报警和中场休息显示广告等功能-DS12887 chip to control the use of game time, to achieve a specified time two players of each tournament scoring record, while taking advantage of the players realize the timer duration, you can also use the keyboard to achieve start, pause, reset, buzzer alarm and display advertising intermission etc.