Morse code is a method of communication that relies on the transmitting of an alphabet constructed from dots and dashes.

electrical pulses along a telegraph wire an audio tone as a radio signal with short and long

pulses or tones as a mechanical or visual signal e.g. a

flashing light.

Samual Morse invented Morse Code:› 1837 - Morse invented the electrical telegraph› 1836 - Morse finished his first working sample

of the telegraph. › 1838 - Morse changed the telegraphic

symbols, from a telegraphic dictionary with number code to a code for each letter.

› 1844 - Morse sent the telegraph message "What hath God wrought" Washington, D.C. to his assistant, in Baltimore, Maryland.

1890’s - Early radio communications Navigational radio beacons Continuous wave amateur radio

operators.

1848 - changes to eleven of the letters, was developed in Germany and eventually adopted as the worldwide standard as "International Morse".

The original code is now used only the United States and has became known as Railroad or American Morse code.