Communication Systems Introduction

Telecommunication implies communication between

• Two points, separated by a distance

• Two persons

A device which provides output in electrical form or it has input in electrical form is called a

• Transducer

• Transmitter

• Receiver

• Repeater

Decrease in signal strength due to energy losses is called

• Attenuation

• Distortion

• Interference

• Noise

Who invented Telegraph?

• Samuel Morse

• Graham Bell

• Guglielmo Marconi

Who invented Telephone?

• Alexander Graham Bell

• Guglielmo Marconi

• Samuel Morse