Guess the random number! Okay... it's too easy :-) press the first button to load a random number to the register. Enter your guess on the binary input buttons. Push the second button to test your guess. If you're right the numbers will match. If you want to see the answer, put in '1111' an the top will show it. If the answer is 'F' or your guess is a subset of the answer, then the numbers will still match. Press the first button again to play again! Third button resets the guess register to '0'. Have fun!