Morse Symbol is a system of communication developed in the early 19th century by Samuel Morse. It uses a combination of dots, dashes, and spaces to represent letters, numbers, and symbols. The DOT (3 letters: D-O-T) is the shortest symbol, followed by the DASH (3 letters: D-A-H), then the DASH (4 letters: D-A-S-H), and finally the DIT (3 letters: D-I-T). These symbols are used to communicate messages over long distances, such as through telegraphs or radio signals.