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 ...

There was a maze that could be completed only by writing different letters, and a train-themed game that unlocked YouTube videos as a reward for typing the correct letters in Morse code, and ...