Define the following:
(1). Transducer
(2). Bandwich.

Explanation

(a). Transducer: Any device that converts one form of energy into another can be termed as a tranducer. In electronic communication systems. We usually come across devices that have either their inputs or outputs in the electrical form An electrical transducer may be difined as a device that converts some physical variable (pressure displacement, force, temperature etc) into correcponding variations in electrical signal its output.
(b). Bandwid: bandwidth refer to the frequency ranga over which an equipment operates of the portion of the specturm occupied by the signal.