#include<reg51.h> #define Q P3 #define A P2 void delay(int x) { int i,j; for(i=x;i>0;i--) for(j=110;j>0;j--); } void main() { int b[17]= {0x3f,0x06,0x5b,0x4f,//这个是cc的数码管 0x66,0x6d,0x7d,0x07, 0x7f,0x6f,0x77,0x7c, 0x39,0x5e,0x79,0x71 }; int keyvalue,a; A = 0x00; Q=0x0f; if(Q!=0x0f)//读取按键是否按下 { delay(10);//延时10ms进行消抖 if(Q!=0x0f)//再次检测键盘是否按下 { switch(Q) { case(0X07): keyvalue=0;break; case(0X0b): keyvalue=1;break; case(0X0d): keyvalue=2;break; case(0X0e): keyvalue=3;break; } //测试行 Q=0xf0; switch(Q) { case(0X70): keyvalue=keyvalue;break; case(0Xb0): keyvalue=keyvalue+4;break; case(0Xd0): keyvalue=keyvalue+8;break; case(0Xe0): keyvalue=keyvalue+12;break; } A=b[keyvalue]; delay(10); while((a<50)&&(Q!=0xf0))//按键松手检测 { delay(10); a++; } } } }
注意:
程序中用的数码管是cc的;
这里补充ca的0~15的代码:int b[16]=
{0xc0,0xf9,0xa4,0xb0,
0x99,0x92,0x82,0xf8,
0x80,0x90,0x88,0x83,
0xc6,0xa1,0x86,0x8e
};