jisuanqi.zip_显示器_计算器 串口

#include <reg51.h> //# include <math.h> #include"keyscanf.h" #include<stdio.h> #define READPORTS P2 #define COMMONPORTS P0 void init(); void display(); //double pow10(int c); unsigned char flag2,KeyValue,i,fuhao; unsigned char code TAB[8] = {0x7f,0xbf,0xdf,0xef,0xf7,0xfb,0xfd,0xfe}; //--点阵字码--// unsigned char code CHARCODE[18][8]={ {0x00,0x00,0x3e,0x41,0x41,0x41,0x3e,0x00}, //0 {0x00,0x00,0x00,0x00,0x21,0x7f,0x01,0x00}, //1 {0x00,0x00,0x27,0x45,0x45,0x45,0x39,0x00}, //2 {0x00,0x00,0x22,0x49,0x49,0x49,0x36,0x00}, //3 {0x00,0x00,0x0c,0x14,0x24,0x7f,0x04,0x00}, //4 {0x00,0x00,0x72,0x51,0x51,0x51,0x4e,0x00}, //5 {0x00,0x00,0x3e,0x49,0x49,0x49,0x26,0x00}, //6 {0x00,0x00,0x40,0x40,0x40,0x4f,0x70,0x00}, //7 {0x00,0x00,0x36,0x49,0x49,0x49,0x36,0x00}, //8 {0x00,0x00,0x32,0x49,0x49,0x49,0x3e,0x00}, //9 {0x18,0x18,0x18,0xff,0xff,0x18,0x18,0x18}, //P {0x18,0x18,0x18,0x18,0x18,0x18,0x18,0x18}, //R {0xc3,0xd7,0x7e,0x3c,0x3c,0x7e,0xd7,0xc3}, //E {0x18,0x18,0x18,0xdb,0xdb,0x18,0x18,0x18}, //C {0x00,0x00,0x7F,0x08,0x08,0x7F,0x00,0x00}, //H {0x00,0x00,0x00,0xFF,0xFF,0x00,0x00,0x00}, //I {0x00,0x7F,0x10,0x08,0x04,0x7F,0x00,0x00}, //N {0x7C,0x48,0x48,0xFF,0x48,0x48,0x7C,0x00} //中 }; int m,n; float result; void main() { unsigned char i; init(); //·····························波特率设置 while(1) { // key(); key(); if(KeyValue>=1&&KeyValue<=14) { for(i=0;i<200;i++) { display(); //······························点阵显示 } } change(); if(flag2==1) { ES=0; TI=1; //printf函数特殊要求 flag2=0; switch(fuhao) { case(11): printf("%d+%d=%.4f\n",m,n,result);break; case(12): printf("%d-%d=%.4f\n",m,n,result);break; case(13): printf("%d*%d=%.4f\n",m,n,result);break; case(14): printf("%d/%d=%.4f\n",m,n,result);break; } m=n=0; // printf("m%.4f\n",result); while(!TI); TI=0; ES=1; } } } void init() //波特率设置 { SCON=0X50; //设置为工作方式1 TMOD=0X20; //设置计数器工作方式2 PCON=0X80; //波特率加倍 TH1=0XF3; //计数器初始值设置，注意波特率是4800的 TL1=0XF3; ES=1; //打开接收中断 EA=1; //打开总中断 TR1=1; } void display() { unsigned char tab,j; for(tab=0;tab<8;tab++) { //消隐 COMMONPORTS=CHARCODE[KeyValue-1][tab]; //输出字码 READPORTS=TAB[tab]; while(j<250) j++; READPORTS=0xFF; } }