基于单片机ADC0809和DAC0832模数和数模设计-毕设课设资料

Posted 2021-05-15 Mr song song

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#include<reg51.h>

#define uint unsigned int
#define uchar unsigned char
uchar code7[]={0x3F,0x06,0x5B,0x4F,0x66,0x6D,0x7D,0x07,0x7F,0x6F};
uint temp=0;
uchar wela=1;
sbit start=P2^0;
sbit oe=P2^6;
sbit clock=P2^7;

uint TH,TL;

sbit wela1=P2^2;
sbit wela2=P2^3;
sbit wela3=P2^4;
sbit wela4=P2^5;

void wel()
{
    switch(wela)
	{
	    case 1:wela4=wela3=wela2=1;
				P1=code7[temp/1000];wela1=0;break;
		case 2:	wela1=wela3=wela4=1;
				P1=code7[temp/100%10];wela2=0;break;
		case 3:	wela2=wela1=wela4=1;
				P1=code7[temp/10%10];wela3=0;break;
		case 4:	wela3=wela2=wela1=1;
				P1=code7[temp%10];wela4=0;  break;
	}
	
}
void disp()