10S_Timer0_INT_CODE.zip_10s 秒表_10s的秒表_10s秒表C程序_timer0_int_定时器 10

#include <reg51.h> #define uint unsigned int #define uchar unsigned char uchar i=0,j=0; sbit smg=P2^3; uchar code smg_tab[]={0xc0,0xf9,0xa4,0xb0,0x99,0x92,0x82,0xf8,0x80,0x90,0x88,0x83,0xa7,0xa1,0x86,0x8e};//段码 uchar code bit_tab[]={0,1,2,3,4,5,6,7};//位选 void main(void) { TMOD=0x01; ET0=1; EX0=1; TR0=1; EA=1; TH0=(65535-50000)/256; TL0=(65535-50000)%256; smg=1; while(1) { if(i==20) { i=0; P2=bit_tab[7]; P0=~smg_tab[j++]; if(j==10) j=0; } } } void timer0() interrupt 1 { TH0=(65535-50000)/256; TL0=(65535-50000)%256; i++; }