ABSTRACT
Because information into and out of a circuit is carried via time domain signals we look first at some of the basic signals used in continuous time circuits. All signals are taken to depend on continuous time t over the full range 1< t<1. It is important to realize that not all signals of interest are functions in the strict mathematical sense; we must go beyond them to generalized functions (e.g., the impulse), which play a very important part in the signal processing theory of circuits.
