ClipArt ETC
A cable system telegraph repeater device. The telegraph repeater device is used to send and receive telegrams in Morse code.

Cable System Telegraph Repeater

A cable system telegraph repeater device. The telegraph repeater device is used to send and receive…

Credit for the invention of the electric telephone is frequently disputed, and new controversies over the issue have arisen from time-to-time. As with other great inventions such as radio, television, light bulb, and computer, there were several inventors who did pioneering experimental work on voice transmission over a wire and improved on each other's ideas.

Telephone Transmitting Device

Credit for the invention of the electric telephone is frequently disputed, and new controversies over…