（分享设计）秒表设计，按键控制

正文摘要:

//简易秒表，T1定时器，方式1,9999秒定时 #include<reg51.h> #define uchar unsigned char #define TH1_DATA (65536-50000)/256 #define TL1_DATA (65536-50000)%256 #define count_1s 20 int time_value= ...