adά++

一次拟合算法,AD转换后的预处理算法,串口,定时器,积分,排序,三角形,延时,一元二次方程.

#include <REG52.H>                /* special function register declarations   */
                                  /* for the intended 8051 derivative         */

#include <stdio.h>                /* prototype declarations for I/O functions */

#define uint unsigned int
#define uchar unsigned char
#ifdef MONITOR51                         /* Debugging with Monitor-51 needs   */
char code reserve [3] _at_ 0x23;         /* space for serial interrupt if     */
#endif                                   /* Stop Exection with Serial Intr.   */
                                         /* is enabled                        */


/*------------------------------------------------
The main C function.  Program execution starts
here after stack initialization.
------------------------------------------------*/
void main (void) {
uint a[16],i,p,j,t;

/*------------------------------------------------
Setup the serial port for 1200 baud at 16MHz.
------------------------------------------------*/
#ifndef MONITOR51
    SCON  = 0x50;		        /* SCON: mode 1, 8-bit UART, enable rcvr      */
    TMOD |= 0x20;               /* TMOD: timer 1, mode 2, 8-bit reload        */
    TH1   = 221;                /* TH1:  reload value for 1200 baud @ 16MHz   */
    TR1   = 1;                  /* TR1:  timer 1 run                          */
    TI    = 1;                  /* TI:   set TI to send first char of UART    */
#endif
   while(1) 
   {
      printf("Input the numbers:\n");
      for(i=0;i<16;i++)
        scanf("%d",&a[i]);
      for(i=0;i<15;i++)
      {
         p=i;
         for(j=i+1;j<16;j++)
            if(a[j]<a[p])p=j;
            if(p!=i)
            {
              t=a[i];
              a[i]=a[p];
              a[p]=t;
             }
       }
          printf("The max is:%d\n",a[15]);
          printf("The min is:%d\n",a[0]);
          printf("The mid is:%d\n",(a[7]+a[8])/2);
    }
 }