numbered buttons to input code. red resets the screen. green enters code and checks for correct answer.
overall updates between other corresponding projects: 1.0-basic keypad. repetitive use of the same block of code. each number has its own recover 1.1-cleaned up the code so the buttons all go to one receiver 1.2-added multiple number displays ------------------------------------------------------------------------- updates for this project: 1.2.0-made keypad and buttons smaller 1.2.1-added multiple number displays 1.2.2-added numbers to the buttons 1.2.3-added dark "screen" to feel like a security keypad 1.2.4-added passcode 1.2.5-added enter and reset button. numbers auto reset upon incorrect answer 1.2.6- replaced text with red/green light
