dac0808-

DAC0808实现数字调压

#include<reg52.h>
#define uchar unsigned char
#define uint unsigned int
sbit key1=P3^0;
sbit key2=P3^1;
sbit key3=P3^2;
sbit key4=P3^3;
sbit key5=P3^4;
sbit key6=P3^5;
sbit key7=P3^6;
sbit key8=P3^7;
void delay(uint z)
{
	uint i;
	while(z--)
		for(i=120;i>0;i--);
}
void main()
{
	P2=0x00;
	while(1)
	{
		if(key1==0)
		P2=0;

		if(key2==0)
		P2=35;

		if(key3==0)
		P2=70;

		if(key4==0)
		P2=105;

		if(key5==0)
		P2=140;

		if(key6==0)
		P2=175;

		if(key7==0)
		P2=210;

		if(key8==0)
		P2=255;
	}
}