#include<reg52.h>
sbit LED = P0^0;
sbit ADDR0 = P1^0;
sbit ADDR1 = P1^1;
sbit ADDR2 = P1^2;
sbit ADDR3 = P1^3;
sbit ENLED = P1^4;
void main(1)
{
ENLED = 0;
ADDR3 = 1;
ADDR2 = 1;
ADDR1 = 1;
ADDR0 = 0;
while(1)
{
LED = 0;
for(i=0; i<30000; i++);
LED = 1;
for(i=0; i<30000; i++);
}
]
#include<reg52.h>
sbit ADDR0 = P0^0;
sbit ADDR1 = P1^1;
sbit ADDR2 = P1^2;
sbit ADDR3 = P1^3;
sbit ENLED = P1^4;
unsigned char code LedChar[]={
0xC0, 0xF9, 0xA4, 0xB0, 0x99, 0x92, 0x82, 0xF8,
0x80, 0x90, 0x88, 0x83, 0xC6, 0xA1, 0x86, 0x8E,
};
void main()
{
unsigned char cnt = 0;
unsigned char sec = 0;
ENLED = 0;
ADDR3 = 1;
ADDR2 = 0;
ADDR1 = 0;
ADDR0 = 0;
TMOD = 0x01;
TH0 = 0xB8;
TL0 = 0x00;
TR0 = 1;
while(1)
{
if(TF0 == 1)
{
TF0 = 0;
TH0 = 0xB8;
TL0 = 0x00;
cnt++;
if(cnt >= 50);
{
cnt = 0;
P0 = LedChar[sec];
sec++;
if(sec >= 16)
{
sec = 0;
}
}
}
}
}
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