PPT Slide
Switches as the basic element of physical implementations
Implementing a simple circuit (arrow shows action if wire changes to "1"):
close switch (if x is "1" or asserted) and turn on light bulb (y) Z ? A
open switch (if x is "1" or asserted) and turn on light bulb (y) Z ? ( not A )
single-pole-single-throw (SPST) switches are very much like transistors of integrated circuits – either open or closed