Cybernetic is defined as the science of communication and control in man and machine system.
The cybernetic control is then the totality of the way by which the input signal given to a system is sensed by a sensor, returned by a feed back for comparison, errors detected and the output (effectors) then given.
It is summarized as:
(a) Reference input
(b) sensor
(c) Feedback
(d) Comparator
(e) Error signal
(f) Effectors.
