Signals and Systems

In Electrical engineering programs, a class and field of study known as "signals and systems" (S and S) is often seen as the "cut class" for EE careers, and is dreaded by some students as such. Depending on the school, undergraduate EE students generally take the class as juniors or seniors, normally depending on the number and level of previous linear algebra and differential equation classes they have taken. The field studies input and output signals, and the mathematical representations between them known as systems, in four domains: Time, Frequency,  s  and  z . Since signals and systems are both studied in these four domains, there are 8 major divisions of study. As an example, when working with continuous time signals ( t ), one might transform from the time domain to a frequency or  s  domain; or from discrete time ( n ) to frequency or  z  domains. Systems also can be transformed between these domains like sign...