1840: Samuel F.B. Morse receives a U.S. patent for his dot-dash telegraphy signals, known to the world as Morse code. The code Morse devised in partnership with Alfred Vail uses a system of dots and ...

Morse code is a communication system developed by Samuel Morse, an American inventor, in the late 1830s. The code uses a combination of short and long pulses – dots and dashes, respectively – that ...