中断加减计数器 中断加减计数器

#include <regx51.h> #define uchar unsigned char #define uint unsigned int void delay(uint x); void Init(); void show(uint num); uchar code tab[10]={0xfc,0x60,0xda,0xf2,0x66,0xb6,0xbe,0xe0,0xfe,0xe6}; void delay(uint x) { uint a,b; while(x--) { for(b = 38;b > 0;b--) { for(a = 130;a > 0;a--) { } } } } void Init() { IE = 0x85; TCON = 0x05; IP = 0x04; } int main() { Init(); while(1) { P0 = 0xfc; P1 = 0xfc; } } void show(uint num) { uint i,j; i = num / 10; //显示十位 j = num % 10; //显示个位 P0 = 0xfe; P1 = tab[i]; delay(1); P0 = 0xfd; P1 = tab[j]; delay(1); } void int_0() interrupt 0 { uint count; count = 0; while(1) { show(count); count++; delay(1); if(count == 100) { count = 0; break; } } } void int_1() interrupt 2 { uint i; EA = 0; for(i = 0;i<10;i++) { P3_0 = 0; delay(10); P3_0 = 1; delay(10); } EA = 1; }