秒表计时器 通过51单片机 数码管现实秒表 开关可以调节时间 对时间进行调整 可以计时-Stopwatch timer stopwatch by the microcontroller digital switch can be adjusted real time to adjust to the time

从开关输入两个8位二进制数，求其和,用LED数码管显示结果-Enter the two 8-bit binary number from the switch, and seeking its display results with LED digital tube