I must use it in deed although I know it is quite expensive.

And I forogt the name of that thing that can show out random numbers. I will check it out later.

The game needs to calculate mathmetics included "addition, subtraction, division, and multiply" like
"5 + _ =9" so must input a number "4".

So is that I need to consider how to write the LCD, and then the equations of mathmetics, and then the keypad74C922,and the sound right??

I don't understand how to calculate marks as the player has answered the right answer and show it to the LCD.

Claire