12位总线控制数码管,显示图

ID:290290 · 发表于 2023-3-18 22:43

12位总线控制数码管，显示图，实际运行图

#include<reg52.h>
#include<absacc.h>
#define hc273_U3 XBYTE[0x1fff] //Y0:0x1fff(无关位用1),U1 74HC273 ,段码四位
#define hc273_U6 XBYTE[0x7fff] //Y3:0x7fff(无关位用1),U6 74Hc273 ,位选
#define hc273_U5 XBYTE[0x5fff] //Y2:0x5fff(无关位用1),U3 74HC273 ,段码四位
#define hc273_U4 XBYTE[0x3fff] //Y1:0x5fff(无关位用1),U1 74HC273 ,段码四位
unsigned char code c[10] = {0x81,0xcf,0x92,0x86,0xcc,0xa4,0xa0,0x8f,0x80,0x84}; // 数码管0-9段码共阳数码管（修改）
unsigned char code w[5] = {0x7f,0xfe,0xfd,0xfb,0xf7};//数码管位码
void main()
{
unsigned int t;
unsigned char i;
unsigned char PA = 0x01;
unsigned char a[4] = {2,3,4,5};
unsigned char b[4] = {7,8,0,9};
unsigned char e[4] = {1,6,8,3};
while(1)
{
for(i=0;i<4;i++)
{
hc273_U3 = c[a[i]];
hc273_U4 = c[b[i]];
hc273_U5 = c[e[i]];
hc273_U6 = ~PA;
for(t=0;t<1000;t++);
PA<<=1;
}
PA = 0x01;
}
}

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