Morse code is an alphabet that uses combinations of dots and dashes to represent letters.
American inventor Samuel Morse created the code in the 1830s as a way to communicate through an electric telegraph.
He designed it so that letters used frequently in English would be easier to transmit.
The letter ‘E’ was the simplest, represented by one dot.
As the telegraph became popular in many countries, a variation of Morse code with accented letters was created so that people who didn’t speak English could use it.
Eventually, the invention of the telephone made the telegraph obsolete in everyday communication.
However, militaries continued to use Morse code in wartime through the 20th century.
In fact, SOS became a universal distress signal because it was easy to transmit through Morse code.