Morse code, the language of the telegraph, is a system of communication that's composed of combinations of short and long tones that represent the letters of the alphabet.

One of Morse’s key innovations was creating a simple system for how combinations of dits and dahs can make up 40 characters, including the 26 letters of the alphabet, numbers zero through nine ...

As a teenage postal clerk in the 1950s, John Riddett would speak in morse code with his workmates. They would use the code, which translates the alphabet into a series of "dits" and "dahs", to ...