#include<reg52.h> #define uint16 unsigned int #define uint8 unsigned char //控制数码管段选锁存口 sbit P3_7=P3^7; //共阴数码管显示 uint8 code table[]={0x3f,0x06,0x5b,0x4f, 0x66,0x6d,0x7d,0x07, 0x7f,0x6f,0x77,0x7c, 0x39,0x5e,0x79,0x71,0};