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.
No, Morse code was not a World War II invention; it was developed in the early 1830s by Samuel Morse and Alfred Vail. It was used primarily for telegraphy and became a crucial communication method long before World War II. During the war, Morse code was utilized extensively for military communication, but its origins date back over a century earlier.
Morse Code
morse's 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.
telegraph, Morse code