Telecommunication (from two words, tele meaning 'from far distances' and communication meaning to share information) is the assisted transmission of signals over a distance for the purpose of communication . In earlier times, this may have involved the use of smoke signals, drums , semaphore , flags , or a mirror to flash sunlight . Starting with the telegraph , telecommunication typically involves the use of electronic transmitters such as the telephone , television , radio , optical fiber and computer .

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