This is somewhat unrelated to Arduino, but I know one of you guys could help me.
I plan on connecting several (25 or so) SPST pushbutton switches to my Arduino (via multiplexers). I know that I can use SPST switches in this manner:
If I use multiple switches, however, it would require multiple resistors. Is there any way to do this with less hardware? If I have to, I'll use a bunch of resistors, but I'd rather not :P