xB6,0xB3xB6,0xB3sbitkey3=P12;sbitkey3=P12;1.電路圖2.鋸齒波3.三角波4．矩形波5.正弦波6.C代碼#include<reg52.h>#include<absacc.h>#defineDAC0832XBYTE[0x7fff]#defineucharunsignedchar#defineuintunsignedint//生成波形期間對(duì)應(yīng)的按鍵要一直按下sbitkeyl二P「0;sbitkey2=P1」；sbitkey4=P13;//下面的編碼定義是由正弦波數(shù)據(jù)生成器所生成，可以百度下載ucharcodesin_tab[]={0x7F,0x82,0x85,0x88,0x8B,0x8F,0x92,0x95,0x98,0x9B,0x9E,0xA1,0xA4,0xA7,0xAA,0xAD,0xB0,0xB3,0xB6,0xB8,0xBB,0xBE,0xC1,0xC3,0xC6,0xC8,0xCB,0xCD,0xD0,0xD2,0xD5,0xD7,0xD9,0xDB,0xDD,0xE0,0xE2,0xE4,0xE5,0xE7,0xE9,0xEB,0xEC,0xEE,0xEF,0xF1,0xF2,0xF4,0xF5,0xF6,0xF7,0xF8,0xF9,0xFA,0xFB,0xFB,0xFC,0xFD,0xFD,0xFE,0xFE,0xFE,0xFE,0xFE,0xFE,0xFE,0xFE,0xFE,0xFE,0xFE,0xFD,0xFD,0xFC,0xFB,0xFB,0xFA,0xF9,0xF8,0xF7,0xF6,0xF5,0xF4,0xF2,0xF1,0xEF,0xEE,0xEC,0xEB,0xE9,0xE7,0xE5,0xE4,0xE2,0xE0,0xDD,0xDB,0xD9,0xD7,0xD5,0xD2,0xD0,0xCD,0xCB,0xC8,0xC6,0xC3,0xC1,0xBE,0xBB,0xB8,0,0xB0,0xAD,0xAA,0xA7,0xA4,0xA1,0x9E,0x9B,0x98,0x95,0x92,0x8F,0x8B,0x88,0x85,0x82,0x7F,0x7C,0x79,0x76,0x73,0x6F,0x6C,0x69,0x66,0x63,0x60,0x5D,0x5A,0x57,0x54,0x51,0x4E,0x4B,0x48,0x46,0x43,0x40,0x3D,0x3B,0x38,0x36,0x33,0x31,0x2E,0x2C,0x29,0x27,0x25,0x23,0x21,0x1E,0x1C,0x1A,0x19,0x17,0x15,0x13,0x12,0x10,0x0F,0x0D,0x0C,0x0A,0x09,0x08,0x07,0x06,0x05,0x04,0x03,0x03,0x02,0x01,0x01,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x01,0x01,0x02,0x03,0x03,0x04,0x05,0x06,0x07,0x08,0x09,0x0A,0x0C,0x0D,0x0F,0x10,0x12,0x13,0x15,0x17,0x19,0x1A,0x1C,0x1E,0x21,0x23,0x25,0x27,0x29,0x2C,0x2E,0x31,0x33,0x36,0x38,0x3B,0x3D,0x40,0x43,0x46,0x48,0x4B,0x4E,0x51,0x54,0x57,0x5A,0x5D,0x60,0x63,0x66,0x69,0x6C,0x6F,0x73,0x76,0x79,0x7Cfor(i=0;i<0xff;i++)for(i=0;i<0xff;i++)};//voiddelayms(uintxms){uinti,j;for(i=xms;i>0;i--)for(j=110;j>0;j--);}//voidjuxing(){uchari;for(i=0;i<0xff;i++)DAC0832=0;DAC0832=0xff;//voidsanjiao(){uchari;for(i=0;i<0xff;i++)DAC0832=i;for(i=0xff;i>0;i--)DAC0832=i;}//voidjuchi(){uchari;////////DAC0832=i;}}//voidsin_func(){uchari;for(i=0;i<0xff;i++){DAC0832=sin_tab[i];if(i==0xff)i=0;}}voidmain(){while(1){if(key1==0){delayms(10);//延時(shí)去抖動(dòng)if(key1==0){while(!key1){juxing();}}}if(key2==0){delayms(10);if(key2==0){while(!key2){sanjiao();}}}//if(key3==0){d