Seven segment display interfacing (CA) using 8051 Micro-Controller

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SOFTWARE: KEIL MICRO VISION 4



SIMULATOR: PROTEUS 8.0



CIRCUIT DIAGRAM:




CIRCUIT WORKING:

I have used seven segment common anode display.Display is connected to 8051 through port 1.

Common segment of the display is connected to VCC. It is common anode (CA) display so in order to activate segment I have provided logic 0 to respective segment (as mentioned in the table).I have connected common segment of the dispaly to VCC.


PROGRAM:


#include<reg51.h> 
void delay(int t); 
int a[10]={0x03,0x9f,0x25,0x0d,0xd9,0x49,0x41,0x1f,0x01,0x09};                         /* 7 segment CA data */ 
int i; 
void main() 
{ 
while(1) 
{ 
for(i=0;i<10;i++) 
{
P1=a[i]; // provide data to display
delay(5);
} 
} 
}
void delay(int t) // delay function 
{
 int i; 
for(i=0;i<t*1275;i++); 
} 

PROGRAM DESCRIPTION:


I have send the data to port 1 according to the below table.


VIDEO:



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