Wheatstone Telegraph

The following article is from The Great Soviet Encyclopedia (1979). It might be outdated or ideologically biased.

Wheatstone Telegraph

 

an electromechanical telegraph that records the text of a telegram on a punched tape in Morse code. Invented by C. Wheatstone in 1858, the telegraph consists of the following: a perforator, which punches the tape holes that are grouped in coded combinations; a transmitter, which converts the coded combinations into electrical signals and transmits them to a communications line; and a receiver, such as an undulator, which receives the signals and records them on paper. The Wheatstone telegraph was used during the early development stages of telegraphy.

The Great Soviet Encyclopedia, 3rd Edition (1970-1979). © 2010 The Gale Group, Inc. All rights reserved.