汇编没有，C语言的做过。汇编只有正弦波的。 
#include "reg52。
  h" 
#define uchar unsigned char
#define uint unsigned int
unsigned char code table[]={0x3f,0x06,0x5b,0x4f,0x66,0x6d,0x7d,0x07,0x7f,0x6f,0x77,0x7c,0x39,0x5e,0x79,0x71,0x00}; //共阴极0~9对应16进制数
//=============正弦波数据==================== 
uchar code sin_tab[256]= 
{ 
0x80, 0x83, 0x86, 0x89, 0x8c, 0x8f, 0x92, 0x95, 0x98, 0x9c, 0x9f, 0xa2, 0xa5, 0xa8, 0xab, 0xae, 
0xb0, 0xb3, 0xb6, 0xb9, 0xbc, 0xbf, 0xc1, 0xc4, 0xc7, 0xc9, 0xcc, 0xce, 0xd1, 0xd3, 0xd5, 0xd8, 
0xda, 0xdc, 0xde, 0xe0, 0xe2, 0xe4, 0xe6, 0xe8, 0xea, 0xec, 0xed, 0xef, 0xf0, 0xf2, 0xf3, 0xf4, 
0xf6, 0xf7, 0xf8, 0xf9, 0xfa, 0xfb, 0xfc, 0xfc, 0xfd, 0xfe, 0xfe, 0xff, 0xff, 0xff, 0xff, 0xff, 
0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xfe, 0xfe, 0xfd, 0xfc, 0xfc, 0xfb, 0xfa, 0xf9, 0xf8, 0xf7, 
0xf6, 0xf5, 0xf3, 0xf2, 0xf0, 0xef, 0xed, 0xec, 0xea, 0xe8, 0xe6, 0xe4, 0xe3, 0xe1, 0xde, 0xdc, 
0xda, 0xd8, 0xd6, 0xd3, 0xd1, 0xce, 0xcc, 0xc9, 0xc7, 0xc4, 0xc1, 0xbf, 0xbc, 0xb9, 0xb6, 0xb4, 
0xb1, 0xae, 0xab, 0xa8, 0xa5, 0xa2, 0x9f, 0x9c, 0x99, 0x96, 0x92, 0x8f, 0x8c, 0x89, 0x86, 0x83, 
0x80, 0x7d, 0x79, 0x76, 0x73, 0x70, 0x6d, 0x6a, 0x67, 0x64, 0x61, 0x5e, 0x5b, 0x58, 0x55, 0x52, 
0x4f, 0x4c, 0x49, 0x46, 0x43, 0x41, 0x3e, 0x3b, 0x39, 0x36, 0x33, 0x31, 0x2e, 0x2c, 0x2a, 0x27, 
0x25, 0x23, 0x21, 0x1f, 0x1d, 0x1b, 0x19, 0x17, 0x15, 0x14, 0x12, 0x10, 0xf,  0xd,  0xc,  0xb , 
0x9,  0x8,  0x7,  0x6,  0x5,  0x4,  0x3,  0x3,  0x2,  0x1,  0x1,  0x0,  0x0,  0x0,  0x0,  0x0 , 
0x0,  0x0,  0x0,  0x0,  0x0,  0x0,  0x1,  0x1,  0x2,  0x3,  0x3,  0x4,  0x5,  0x6,  0x7,  0x8 , 
0x9,  0xa,  0xc,  0xd,  0xe,  0x10, 0x12, 0x13, 0x15, 0x17, 0x18, 0x1a, 0x1c, 0x1e, 0x20, 0x23, 
0x25, 0x27, 0x29, 0x2c, 0x2e, 0x30, 0x33, 0x35, 0x38, 0x3b, 0x3d, 0x40, 0x43, 0x46, 0x48, 0x4b, 
0x4e, 0x51, 0x54, 0x57, 0x5a, 0x5d, 0x60, 0x63, 0x66, 0x69, 0x6c, 0x6f, 0x73, 0x76, 0x79, 0x7c, 
}; 
//三角波信号数据表
uchar code thr_tab[32]=
{
 0x00,0x0f,0x1f,0x2f,0x3f,0x4f,0x5f,0x6f,0x7f,0x8f,0x9f,0xaf,0xbf,0xcf,0xdf,0xef,
 0xff,0xef,0xdf,0xcf,0xbf,0xaf,0x9f,0x8f,0x7f,0x6f,0x5f,0x4f,0x3f,0x2f,0x1f,0x0f
};
//-------------------------------------------------------------------------------------------------------
//锯齿波信号数据表
uchar code jc_tab[33]=
{
 0x00,0x08,0x0f,0x18,0x1f,0x28,0x2f,0x38,0x3f,0x48,0x4f,0x58,0x5f,0x68,0x6f,0x78,
 0x7f,0x88,0x8f,0x98,0x9f,0xa8,0xaf,0xb8,0xbf,0xc8,0xcf,0xd8,0xdf,0xe8,0xef,0xf8,0xff
};
sbit LED4=P2^7;
sbit LED3=P2^6;
sbit LED2=P2^5;
sbit LED1=P2^4;
int temp1; //实际温度
int conter=0;  //LED占空比计数
unsigned char tabArry[4]; //保存显示数据
//按键口申明
sbit k1=P2^0;
sbit k2=P2^1;
sbit LED=P2^2;
sbit mode=P3^2;
char flag=1; //按键标志
int keycount=0; //按键计数
unsigned char waveth,wavetl;
unsigned int mbjs,wavecount,frecount=500;
//毫秒延时程序
void delayms(int ms)
{
 uchar i;
    while(ms--)
  {
    for(i=250;i>0;i--);
  }
}
//数据分位
void change(char ch1,unsigned int ch)
{
 tabArry[0]=ch1;
 tabArry[1]=ch%1000/100;
 tabArry[2]=ch%100/10;
 tabArry[3]=ch%10; 
}
//键盘扫描
void keyscan()
{
 if(flag==1)
 {
  if(mode==0)    //用mode切换温度和波形
  { 
   delayms(10);
   if(mode==0)
   {
    flag=0;
    keycount++;
    if(keycount>=4) keycount=0;
    //if(keycount>2) ET1=1;
    //else ET1=0; 
   }
  }  
 
  if(k1==0)
  { 
   delayms(10);
   if(k1==0)
   {
    flag=0;
    switch(keycount)
    {
     case 0:
     //case 4:
     // ET1=1;
      frecount++;
      if(frecount>1000) frecount=0;
      change(0x0d,frecount);
      break;
     case 1:
    // case 6:
      frecount++;
      if(frecount>1000) frecount=0;
      change(0x0e,frecount);
      break;
     case 2:
      frecount++;
      if(frecount>1000) frecount=0;
      change(0x0f,frecount);
      break;
     case 3:
      frecount++;
      if(frecount>1000) frecount=0;
      change(0x05,frecount);
      break;
    }  
   }
  }
  if(k2==0)。