Task 1: Counter with 7-Segment Display (0-9)

Design a 4-bit counter using D flip-flops that counts from 0 to 9 and then resets to 0. Display the count on a 7-segment display.

Specifications:

1. Counter: Use a 4-bit D flip-flop counter that increments from binary 0000 (0) to 1001 (9), then resets to 0000.
2. 7-Segment Display: Map each binary output to its corresponding decimal display (0-9).