此程序的电路图下载:http://www.51hei.com/f/ks51.pdf 只需要看led部分即可,其他部分可忽略掉.
#include <reg52.h>
typedef unsigned char uchar; sbit A 0 = P1^0; sbit ADDR1 = P1^1; sbit ADDR2 = P1^2; sbit ADDR3 = P1^3; sbit ENLED = P1^4; void main() { uchar cnt = 0; uchar i =0; uchar j =0; uchar k =1; ENLED = 0; ADDR3 = 1; ADDR0 = 0; ADDR1 = 1; ADDR2 = 1; TMOD = 0x01; TH0 = 0xB8; TL0 = 0x00; //12(65536-X)/11059200 =0.02 TR0 = 1; while(1) { if(TF0 == 1) { TF0 = 0; TH0 = 0xB8; TL0 = 0x00; i++; } if(50 == i) { i = 0; if(j ==0) { P0 = ~(0x01<