- A character code represented by dots and dashes (or brief and long pulses), originally familiar with deliver emails by telegraph, later by flashes of light or by radio.
- a telegraphic signal, by which dots, dashes, and spaces represent letters, numbers, along with other elements of text. The original code was conceived by Samuel B. Morse. The rule today mostly utilized is the Global Morse signal, in addition regarded just whilst the Morse code.
- a telegraph signal by which letters and figures are represented by strings of dots and dashes (brief and long indicators)