Seven Segment Display with Parallel Port

Interfacing Seven Segment Display with Parallel Port

This is basicaly sort of assignment for you to write code for seven segment display. I am providing you circuit diagram and hint and you can try it. Its very easy and simple. 

• Seven Segment Common Cathode Counter:
• Common Cathode means all –ve terminals of LEDs are grounded & 1 for on, 0 for off.
• Connect 8 LEDs to the data port of the parallel port as shown in the figure. 

• 1st construct the table for 7-segment

Digits	Hex
0	3f
1	06
2	5b
3	4f
4	66
5	6d
6	7d
7	07
8	7f
9	6f

• This is basically 7-segment counter & timer in which you can set/reset, and pause it.

Enjoy playing with parallel port.