#include //51#defineucharunsignedchar //以后unsignedchar就可以用uchar代替#defineuint unsignedint //以后unsignedint 就可以用uint代替#defineulongunsignedlong //以后unsignedulong就可以用ulong代替sbitLcdEn_P=P2^5; //1602液晶的EN管腳sbitLcdRw_P=P2^6; //1602液晶的RW管腳sbitLcdRs_P=P2^7; //1602液晶的RS管腳ulong //ulong //ulong //uchar //運(yùn)算符號(hào)，1加，2減，3乘，4uchar //1uchar //2//毫秒級(jí)的延時(shí)函數(shù)，timevoidDelayMs(uinttime){uint}//1602液晶寫命令函數(shù)，cmd就是要寫入voidLcdWriteCmd(ucharcmd){LcdRs_P=LcdRw_P=LcdEn_P=0;LcdEn_P=1;LcdEn_P=0;}1602液晶寫數(shù)據(jù)函數(shù)，datvoidLcdWriteData(uchardat){LcdRs_P=LcdRw_P=LcdEn_P=0;LcdEn_P=1;LcdEn_P=0;}1602voidLcdInit(){ 16*2顯示，5*7點(diǎn)陣，8 // //地址加1，當(dāng)寫入數(shù)據(jù)后光標(biāo)右移 //清屏}//voidLcdGotoXY(ucharline,ucharcolumn){////}//voidLcdPrintStr(uchar*str){}//voidLcdPrintNum(ucharnum){}|1234||1123||2456||3789||40|ucharKeyScanf(){uchar{{ // // //{case0xe7:return1;case0xd7:return2;case0xb7:returncase0x77:returncase0xeb:return4;case0xdb:return5;case0xbb:return6;case0x7b:returncase0xed:return7;case0xdd:return8;case0xbd:return9;case0x7d:returncase0xee: return13;case0xde: return0;case0xbe: return14;case return}return}}return}//voidmain(){ucharret;uchari;{ // // //運(yùn)算數(shù) //運(yùn)算數(shù) //計(jì)算結(jié)果 //運(yùn)算符號(hào) //臨時(shí)變量 //1輸入標(biāo)志 //2輸入標(biāo)志{ //矩陣鍵盤的掃描結(jié) //99,{ //矩陣鍵盤的掃描結(jié){{ //cal0{ //1{ //把運(yùn)算數(shù)1放大10倍 //將運(yùn)算數(shù)1的標(biāo)志變量num1_flag11}} //cal0{ //2{ //將按下的數(shù)字鍵顯示 //把運(yùn)算數(shù)2放大10倍 //將運(yùn)算數(shù)2的標(biāo)志變量num2_flag12}}}{ //{ //1{ //如果是的話在液晶顯示數(shù)字0 //給運(yùn)算數(shù)1一個(gè)計(jì)算初值0} //將運(yùn)算符變量改為1,代表即將進(jìn)行加法運(yùn)算 //把加法運(yùn)算符號(hào)顯示到屏幕上}}{ //{ //1{ //如果是的話在液晶上面顯示0 //給運(yùn)算數(shù)1一個(gè)計(jì)算初值0} //將運(yùn)算符變量改為2,代表即將進(jìn)行減法運(yùn)算 //把減法運(yùn)算符號(hào)顯示到屏幕}}{ //{ //1{ //如果是的話，在液晶上面顯示0 //給運(yùn)算數(shù)1一個(gè)計(jì)算初值0} //將運(yùn)算符變量改為3,代表即將進(jìn)行乘法運(yùn)算 //把乘法運(yùn)算符號(hào)顯示到屏幕上}}{ //{ //1{ //如果是的話，在液晶上面顯示0 //給運(yùn)算數(shù)1一個(gè)計(jì)算初值0} //將運(yùn)算符變量改為4,代表即將進(jìn)行除法運(yùn)算 //把除法運(yùn)算符號(hào)顯示到屏幕}}{ //while}{ //2{ //如果是的話，在液晶上面顯示0 //給運(yùn)算數(shù)2一個(gè)計(jì)算初值0}switch(cal)//cal{case1: //2 // // //{ //} //{} // //{{case2: //2 //{ // //{}}else{ // //{}}{}

// // // //case3: //定位到液晶的第2 // // //{ //} //} // //case4:{計(jì)算結(jié)果(1000倍

LcdGotoXY(1,15);//定位到液晶的第2行最后一列 //光