Almost OT: Pushbutton switch latching

[Chuck Guzis]

How about this?

8 74xx30's (8 input NAND) with each output feeding one of the inputs 
of the other stages.  The remaining input of each gate is connected 
to a pushbutton whose other side is grounded and the gate side pulled 
up to Vcc through an appropriate resistor (say, 2.2K).  The circuit 
is self-debouncing and the last button released governs the output.  
Basically an 8-stable flip-flap-floop...-flop.  Initial state is 
theoretically random, but probably could be forced with a small 
capacitor across one of the buttons.

If you expand much beyond this, note that fanout issues may rear 
their ugly heads.

Cheers,
Chuck