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Printing TelegraphyMethods were early devised for transmitting information telegraphically without manual operation and the use of the Morse code. - Among the schemes developed were the Creed, Murry, Potts, Siemens, Baudot, Morkrum, Kleinschmidt, and Western Electric.6,7,8,9,10 Very little Morse operation is used now, most messages being sent by printing-telegraphy methods. Two systems of printing telegraphy are employed. In start-stop printing telegraphy the signal-receiving mechanism is normally at rest and is started in operation at the beginning and stopped at the end of each character transmitted.2 In multiplex printing telegraphy2 the line circuit is employed to transmit in turn characters for each of two or more independent telegraph channels.
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Last Update: 2011-05-30