Question

Design an electronic combination lock that activates if and only if the 3-bit digits 7, 2, and 6 are input sequentially. Used 3 slide switches for the BCD input, and use the 7-segment display to indicate the digit being entered. Then press a button to actually submit the digit to the circuit. An LED should illuminate after the third correct number is submitted. Demonstrate operation by showing a successful unlocking sequence and several unsuccessful attempts.

Answer 1