1.This course includes the history of control, modeling of physical processes, design specifications in the time domain,design using the root locus, frequency response and anintroduction to state space design for single-input and single-output systems.

2.In 1945 H. W. Bode presented a system for analyzing the stability of feedback systems by using graphical methods. Until this time, feedback analysis was done by multiplication and division, so calculation of transfer functions was a time consuming and laborious task.

3.Remember, engineers did not have calculators or computers until the '70s. Bode presented a log technique that transformed the intensely mathematical process of calculating a feedback system's stability into graphical analysis that was simple and perceptive.

4.Feedback system design was still complicated, but it no longer was an art dominated by a few electrical engineers kept in a small dark room.

5.Any electrical engineer could use Bode's methods find the stability of a feedback circuit, so the application of feedback to machines began to grow. There really wasn't much call for electronic feedback design until computers and transducers become of age.