The electric telegraph, transmitting signals as impulses, prior to the invention of the telephone and speech-carrying wireless ("radio"). The first wireless could only send Morse Code.
The invention of the telegraph method of communication made necessary the use of a code . . . Sam Morse's code was simply, logical, and became popular very quickly after its invention and demonstration to others.
morse's code.
Morse Code
Telegraph and the Morse code.
Telegraph
The Morse code.
no
Morse
Morse had a bake sell on the side of his town house.
Samuel Morse was known for portrait painting, not inventing.
It helped people communicate.
telegraph, Morse code