1 - Digital Mastermind - The object of the game 'Mastermind' is to guess the sequence of four digit number that the opponent has selected at random from an available selection.

2 - Memory Game - The circuit is designed to be a game pattern where the player is tasked to reproduce the light pattern output using switches. Correct input from the player causes a corresponding LED to light so that a correct set of inputs from the player reproduces the light pattern.

3 - Games Contest Button - This circuit design is a quiz show buzzer.

4 - Simulated Elevator - This is a simplified elevator system implemented using flip-flops.

5 - xxxx - xxxxxx.

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