//設定以Timer0計時中斷mode1，令P0.0輸出指定音頻#include #define  F  1000                                //定義輸出頻率=1KHz#define  T  11059200/12                //#define  t  65536-(T/2/F)                //main(){        IE=0x82;        TMOD=0x01;        TL0=t;        TH0=t>>8;        TR0=1;        while(1);          }void T0_int(void) interrupt 1{        TL0=t;        TH0=t>>8;        P0=P0^0x01;}

 
//設定以Timer0計時中斷mode1，令P0.0輸出指定音頻
#include 
#define  F  1000        //定義輸出頻率=1KHz
#define  T  11059200/12                //
#define  t  65536-(T/2/F)                //
main()
{
        IE=0x82;
        TMOD=0x01;
        TL0=t;
        TH0=t>>8;
        TR0=1;
        while(1);
}
void T0_int(void) interrupt 1
{        TL0=t;
        TH0=t>>8;
        P0=P0^0x01;
}