本程序所用的原理图下载: 点这里 ，单片机芯片使用的stc89c52；找到相应部分即可.这是一整个单片机的电路图其他的忽略. hex文件及其工程文件下载：http://www.51hei.com/f/pingfc.rar 下面是程序源码：
/* *功能：使用矩阵按键使得按键按下时上显示各自对应的数字的立方数 * 优化显示，只显示有效位； * 且使用独立按键实现key1清零，key2加数，key3减数； *日期：2013-05-07-10:20 *作者：徐冉 *特别说明：本程序代码已经通过调试，仅供学习使用； * */ /***********AT89C52-RC 单片机-51hei实验板***********/ /*****************51hei开发板*********************/
#include <reg52.h> typedef unsigned int uint; typedef unsigned char uchar; sbit wela = P2^7; sbit dula = P2^6; sbit key1 = P3^4; sbit key2 = P3^5; sbit key3 = P3^6; sbit fm = P2^3; uint temp; uchar code table[] = { 0x3F, //"0" 0x06, //"1" 0x5B, //"2" 0x4F, //"3" 0x66, //"4" 0x6D, //"5" 0x7D, //"6" 0x07, //"7" 0x7F, //"8" 0x6F, //"9" 0x77, //"A" 0x7C, //"B" 0x39, //"C" 0x5E, //"D" 0x79, //"E" 0x71, //"F" 0x76, //"H" 0x38, //"L" 0x37, //"n" 0x3E, //"u" 0x73, //"P" 0x5C, //"o" 0x40, //"-" 0x00, //熄灭 0x00 //自定义 }; // uchar key; Error!!! 此时的key值大于258 超出了uchar 故错误！！ uint key; void display(num); void delay(uint xms); void max_kanscan(); void keyscan(); void main(void) { while(1) { keyscan(); max_kanscan(); display(key); } }
void display(num) { uchar qian, bai, shi, ge; qian = num / 1000 % 10; bai = num / 100 % 10; shi = num / 10 % 10; ge = num % 10; if(num < 10) { dula = 1; P0 =table[ge]; dula = 0; P0 = 0xff; wela = 1; P0 = 0xfe; wela = 0; } else if(num < 100) { dula = 1; P0 =table[shi]; dula = 0; P0 = 0xff; wela = 1; P0 = 0xfe; wela = 0; P0 = 0x00; delay(1);
dula = 1; P0 =table[ge]; dula = 0; P0 = 0xff; wela = 1; P0 = 0xfd; wela = 0; P0 = 0x00; delay(1); } else if(num < 1000) { dula = 1; P0 =table[bai]; dula = 0; P0 = 0xff; wela = 1; P0 = 0xfe; wela = 0; P0 = 0x00; delay(1);
dula = 1; P0 =table[shi]; dula = 0; P0 = 0xff; wela = 1; P0 = 0xfd; wela = 0; P0 = 0x00; delay(1);
dula = 1; P0 =table[ge]; dula = 0; P0 = 0xff; wela = 1; P0 = 0xfb; wela = 0; P0 = 0x00; delay(1); } else if(num < 10000) { dula = 1; P0 =table[qian]; dula = 0; P0 = 0xff; wela = 1; P0 = 0xfe; wela = 0; P0 = 0x00; delay(1);
dula = 1; P0 =table[bai]; dula = 0; P0 = 0xff; wela = 1; P0 = 0xfd; wela = 0; P0 = 0x00; delay(1);
dula = 1; P0 =table[shi]; dula = 0; P0 = 0xff; wela = 1; P0 = 0xfb; wela = 0; P0 = 0x00; delay(1);
dula = 1; P0 =table[ge]; dula = 0; P0 = 0xff; wela = 1; P0 = 0xf7; wela = 0; P0 = 0x00; delay(1); } }
void delay(uint xms) { uint i, j; for(i = xms; i > 0; i--) for(j = 125; j > 0; j--); }
void keyscan() { if(key1 == 0) { delay(5); if(key1 == 0) { fm = 0; key = 0; while(!key1); delay(5); while(!key1); fm = 1; } }
if(key2 == 0) { delay(5); if(key2 == 0) { fm = 0; key++; while(!key2); delay(5); while(!key2); fm = 1; } }
if(key3 == 0) { delay(5); if(key3 == 0) { fm = 0; key--; while(!key3); delay(5); while(!key3); fm = 1; } }
} void max_kanscan() { P3 = 0xfe; temp = P3; temp &= 0xf0; if(temp != 0xf0) { delay(5); temp = P3; temp &= 0xf0; if(temp != 0xf0) {//按键检测 temp = P3; fm = 0; switch(temp) { case 0xee: key = 1 * 1 *1; break; case 0xde: key = 2 * 2 *2; break; case 0xbe: key = 3 * 3 *3; break; case 0x7e: key = 4 * 4 *4; break; default: break; } //按键释放 while(temp != 0xf0) { temp = P3; temp &= 0xf0; } delay(5); while(temp != 0xf0) { temp = P3; temp &= 0xf0; } fm = 1; } }
P3 = 0xfd; temp = P3; temp &= 0xf0; if(temp != 0xf0) { delay(5); temp = P3; temp &= 0xf0; if(temp != 0xf0) {//按键检测 temp = P3; fm = 0; switch(temp) { case 0xed: key = 5 * 5 *5; break; case 0xdd: key = 6 * 6 *6; break; case 0xbd: key = 7 * 7 *7; break; case 0x7d: key = 8 * 8 *8; break; default: break; } //按键释放 while(temp != 0xf0) { temp = P3; temp &= 0xf0; } delay(5); while(temp != 0xf0) { temp = P3; temp &= 0xf0; } fm = 1; } }
P3 = 0xfb; temp = P3; temp &= 0xf0; if(temp != 0xf0) { delay(5); temp = P3; temp &= 0xf0; if(temp != 0xf0) {//按键检测 temp = P3; fm = 0; switch(temp) { case 0xeb: key = 9 * 9 *9; break; case 0xdb: key = 10 * 10 *10; break; case 0xbb: key = 11 * 11 *11; break; case 0x7b: key = 12 * 12 *12; break; default: break; } //按键释放 while(temp != 0xf0) { temp = P3; temp &= 0xf0; } delay(5); while(temp != 0xf0) { temp = P3; temp &= 0xf0; } fm = 1; } }
P3 = 0xf7; temp = P3; temp &= 0xf0; if(temp != 0xf0) { delay(5); temp = P3; temp &= 0xf0; if(temp != 0xf0) {//按键检测 temp = P3; fm = 0; switch(temp) { case 0xe7: key = 13 * 13 *13; break; case 0xd7: key = 14 * 14 *14; break; case 0xb7: key = 15 * 15 *15; break; case 0x77: key = 16 * 16 *16; break; default: break; } //按键释放 while(temp != 0xf0) { temp = P3; temp &= 0xf0; } delay(5); while(temp != 0xf0) { temp = P3; temp &= 0xf0; } fm = 1; } } }
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