用计数器中断实现100以内的按键计数51单片机PROTEUS仿真-33.rar

#include <reg52.h> #define uchar unsigned char #define uint unsigned int uchar DSY_CODE[]= { 0x3f,0x06,0x5b,0x4f,0x66,0x6d,0x7d,0x07,0x7f,0x6f }; uchar Count = 0; void main() { P0 = 0x00; P2 = 0x00; TMOD = 0x06; TH0=255; TL0=255; ET0=1; EX0=1; EA =1; IP =0x02; IT0=1; TR0=1; while(1) { P0 = DSY_CODE[Count/10]; P2 = DSY_CODE[Count%10]; } } void Clear_Counter() interrupt 0 { Count = 0; } void Key_Counter() interrupt 1 { Count = (Count + 1) %100; }