Wiki: Morse Code

Morse Code is a form of communication in which an alphabet is used to send coded text information using light or sound.  American Samuel Finely Breese Morse (1791-1872) invented the telegraph and Morse Code in 1836.  The code was successfully tested on 24 May 1844, when Morse himself sent the first message between Washington DC and Baltimore: "What has God wrought?"  The messages consist of dashes and dots, which signify the corresponding letters or numbers.