... latch into a flip-flop is to construct a pulsegenerator circuit which remains at a high-level for a very short period of time afterthe enable signal goes high. We use this pulse generator to drive ... xcircuit, a circuit vector drawing package by Tim Edwards;asymptote, a scripted vector drawing package by Andy Hammerlindl, John Bow-man, and Tom Prince; SPIM, a MIPS32 simulator written by James ... assignment to those variables.An expression which is equivalent to true, no matter what values are assigned to any variables, is called a tautology; an expression which is equivalent to false...