* Congraulations You have built yourself one bit of digital memory and simple digital display!
* EXTRA:
** Returning to the idea of logic, label one side of a knife switch "TRUE" and the other side "FALSE".** Working in small groups, use multiple knife switches (say five or more) and build a circuit that responds to a complex input. For instance, my circuit has five switches ("A" through "E") and one Light Bulb ("O"). The lighbulb, O, only turns on if switches A, C, and D are True, and switches B and E are false.
** Build your circuit and show that it works.
** Represent that circuit as a logical statement. O = (A + C + D) + (!B + !E)
