Connect two SN74HC573 four digital tube (only one), to choose the assignment, the digital display of digital error (1), four, five, such as pictures, painted with a green pen,

Ask god to help analysis and see what is wrong, analysis to go, can't find the reason

 sbit duan=P3 ^ 6; 
Sbit wei=P3 ^ 7; 
Uchar num, x, m, ge; 
Uchar code table [10]={xa4 xc0 0, 0 xf9, 0, 0 xb0, 
X92 0 x99, 0, 0 x82, 0 xf8, 0 x80, 0 x98}; 
Void delayms (uint); 
Void the display (uchar); 

Void main () 
{
TMOD=0 x01; 
Xa3 TH0=0; 
Xa3 TL0=0; 
EA=1; 
ET0=1; 
TR0=1; 
While (1) 
{
The display (ge); 
} 
} 

Void the display (uchar ge) 
{
Wei=1; 
The P2=0 xfe; 
Wei=0; 
The P2=0 XFF; 
Delayms (200); 
Duan=1; 
The P2=table (ge), 
Duan=0; 
The P2=0 XFF; 
Delayms (200); 
} 

Void delayms (uint XMS) 
{
Uint I, j; 
For (I=XMS; I> 0; I -); 
For (j=110; J> 0; J -); 
} 

Void time () interrupt 1 
{
Xa3 TH0=0; 
Xa3 TL0=0; 
m++; 
If (m==20) 
{
M=0; 
num++; 
Ge=num % 10; 
} 
} 

CodePudding user response:

Look at the 6 shows a or b
Perhaps there are two feet short circuit

CodePudding user response:

reference 1st floor dceacho response:

see 6 shows a or b
Perhaps there are two feet short circuit

6 shows the b, not 6

CodePudding user response:

reference 1st floor dceacho response:

see 6 shows a or b
Perhaps there are two feet short circuit

CodePudding user response:

reference 1st floor dceacho response:

see 6 shows a or b
Perhaps there are two feet short circuit

Now and 4 and 5, flash, flash over 6 (b) and then start to count down, to 9, after starting from 0 to continue

CodePudding user response:

Hardware has a short circuit, the estimate is that the data of low two line short circuit,

CodePudding user response:

reference 5 floor qq_708907433 reply:

hardware has a short circuit, estimate is that the data of low short circuit, two line

I just eight grade eight line connects to the led on, Ming to see at least, a and b can't destroy, just like PWM, dark, will light up