基于单片机的数字电压表设计(14)

科研报告,科研调查,科研训练：基于单片机的数字电压表设计

附 录

主程序：

#include<reg52.h> Unsigned char

dispbitcode[]={0x3f,0x06,0x5b,0x4f,0x66,0x6d,0x7d,0x07,0x7f,0x6f}; code

unsigned char dispbuf[4]; unsigned int i; unsigned int j;

unsigned char getdata; unsigned int temp; unsigned int temp1; unsigned char count; unsigned char d; sbit ST=P3^0; sbit OE=P3^1; sbit EOC=P3^2; sbit CLK=P3^3; sbit P20=P2^0; sbit P21=P2^1; sbit P22=P2^2; sbit P23=P2^3; sbit P17=P1^7; void TimeInitial();

void Delay(unsigned int i);

void TimeInitial() { TMOD=0x10;

TH1=(65536-200)/256; TL1=(65536-200)%256; EA=1; ET1=1; TR1=1; }

void Delay(unsigned int i) {

unsigned int j; for(;i>0;i--) {

for(j=0;j<125;j++) {;} }