问题描述: 51单片机与AD转换程序 1个回答 分类:综合 2014-11-07 问题解答: 我来补答 #include<reg51.h>#define uchar unsigned char#define uint unsigned intsbit wr=P2^6;sbit rd=P2^7;sbit adint=P2^5;delay(uint z){ uchar w; while(z--) { for(w=0;w<125;w++); }}ad_star(){ wr=1; wr=0; wr=1;}main(){ uchar a; while(1) { ad_star(); while(adint); rd=0; a=P0; delay(10); rd=1; if(a>0&a<=20){P3=0xc0;} if(a>20&a<=40){P3=0xf9;} if(a>40&a<=60){P3=0xa4;} if(a>60&a<=80){P3=0xb0;} if(a>80&a<=100){P3=0x99;} if(a>100&a<=120){P3=0x92;} if(a>120&a<=140){P3=0x82;} if(a>140&a<160){P3=0xf8;} if(a>160&a<=180){P3=0x80;} if(a>180&a<=200){P3=0x90;} if(a>200&a<=220){P3=0x88;} if(a>220&a<=240){P3=0x83;} if(a>240&a<=255){P3=0xc6;} }} 展开全文阅读