#include "reg52.h"
unsigned char code dsp_code_ca[] = {0xc0,0xf9,0xa4,0xb0,0x99,0x92,0x82,0xf8,0x80,0x90};
unsigned int tflag;
unsigned char dspflag;
unsigned char second;
unsigned char dflag;
void display(unsigned char d);
void main()
{
TMOD |= 0x02;
TH0 = 0x06;
TL0 = 0x06;
EA = 1;
ET0 = 1;
TR0 = 1;
while(1)
{
display(second);
}
}
//T0中斷服務函數
void isr_t0(void) interrupt 1
{
tflag++;
dflag++;
if(dflag == 16)
{
dflag = 0;
dspflag++;
if(dspflag == 2)
dspflag = 0;
}
if(tflag == 4000)
{
tflag = 0;
second++;
if(second == 60)
second = 0;
}
}
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