comes from Greek. Tele meaning distant and graphein to write.
It is the communication done by sending and receiving current pulses in series between two fixed points. This is either done through wire or by radio.
Branch of telecommunications concerned with processes providing reproduction, at a distance, of written, printed, or pictorial matter or the reproduction at a distance of any kind of information in such form.
The act of sending a message over wire or radio to a special receiving station.
communicating at a distance by electric transmission over wire
apparatus used to communicate at a distance over a wire (usually in Morse code)
Term usually applied to the sending and receiving of signals by means of wire or radio signals - particularly in Morse Code. However, the word was invented by the French ("Telegraphie") in the 18th Century. It actually means "Distant Writing" and was applied to their new invention - Semaphore.
Literally, telegraphy means "writing at a distance". First major form of communication using Morse code to transfer information via the on-off keying of a carrier. More sophisticated forms include telex. Largely overtaken by higher-capacity data techniques.
Communicationbetween two points by sending and receiving a series of current pulses either through wire or by radio.
Telegraphy (from the Greek words (τηλε) = far and (γÏαψειν) = write) is the long-distance transmission of written messages without physical transport of letters, originally by changing something that could be observed from a distance (optical telegraphy). Radiotelegraphy or wireless telegraphy transmits messages using radio. Telegraphy includes recent forms of data transmission such as fax, email, and computer networks in general.