The digital tube dynamically and vaguely displays the numbers 1-2-3-4-5-6-7-8. The so-called dynamic display actually means that the digital tube scans continuously. We assign values to the first digit, the second digit, etc. of the digital tube at very short intervals. If the time is short, our eyes cannot see the intervals, and it is just a row of numbers.
Proteus schematic diagram:
Proteus renderings:
code:
#include
#include
#define uint unsigned int
#define uchar unsigned char
sbit duan=P2^0;
sbit wei=P2^7;
uchar code table_wei[]={ //Hexadecimal code of selected display character
0x06,0x5b,0x4f,
0x66,0x6d,0x7d,
0x07,0x7f,0x7f};
uchar code table_duan[]={ //Hexadecimal code of bit selection control
0xfe,0xfd,0xfb,0xf7,
0xef,0xdf,0xbf,0x7f,0x7f};
void delay(uint delay_time);
void main()
{
while(1)
{
uint i;
for(i=0;i<8;i++)
{
wei=1; //Turn on the bit select switch
P0=table_wei[i];
wei=0; //Turn off the bit select switch
duan=1; //Turn on the break select switch
P0=table_duan[i];
delay(20);
duan=0; //Turn off the break select switch
}
for(i=8;i>0;i--)
{
wei=1;
P0=table_wei[i];
wei=0;
duan=1;
P0=table_duan[i];
delay(10);
duan=0;
}
}
}
void delay(uint delay_time) //Delay 1ms subroutine
{
uint x,y;
for(x=delay_time;x>0;x--)
for(y=112;y>0;y--)
{;}
}
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