基于单片机的可调电压设计(共8页).docx

#include reg52.h/宏定义#define uchar unsigned char#define uint unsigned int/按键定义sbit KEY1= P20;sbit KEY2= P21;sbit KEY3= P22;sbit KEY4= P23;/数码管定义sbit W1= P24;sbit W2= P25;sbit W3= P26;sbit W4= P27;/DAC定义sbit CS_5615=P32;sbit CLK_5615=P33;sbit DAT_5615=P34;/报警指示定义 sbit beep = P36; sbit Duan = P37; uint U; bit flag=0;uint a=0; uchar code table= 0xC0,/*0*/ 0xF9,/*1*/ 0xA4,/*2*/