001_ADC0809模数转换与显示

/*************** writer:shopping.w ******************/ #include <reg52.h> #define uint unsigned int #define uchar unsigned char #define DATA P1 sbit OE = P2^5; sbit EOC = P3^3; sbit ST = P2^7; sbit C1 = P3^0; sbit C2 = P3^1; sbit C3 = P3^2; uint display_data = 0; /*显示数据*/ uchar code LEDData[]= { 0x3f,0x06,0x5b,0x4f,0x66,0x6d,0x7d,0x07,0x7f,0x6f }; void DelayMS(uint ms) { uchar i; while(ms--) { for(i=0;i<120;i++); } } void Display_Result(uint d) { P2 = 0xf7; P0 = LEDData[d%10]; DelayMS(5); P2 = 0xfb; P0 = LEDData[d%100/10]; DelayMS(5); P2 = 0xfd; P0 = (LEDData[d/100]| 0x80); DelayMS(5); P2 = 0xfe; P0 = LEDData[3]; DelayMS(5); } void main() { C1 = 1; C2 = 1; C3 = 0; while(1) { ST = 0; ST = 1; ST = 0; while(EOC == 0); OE = 1; display_data = ((5.0/255) * DATA) * 100; Display_Result(display_data); OE = 0; } }