Why do we need Morse code?

Morse Code was used to send messages over long distances. Morse code messages can be sent using light or by pulses. Eventually, when Morse Code was adapted to radio, the dots and dashes began being referred to as "dits" and "dahs" based on the sound of the radio pulses.

Correspondingly, how is Morse code worked out?

Morse code is a method of transmitting text information as a series of on-off tones, lights, or clicks that can be directly understood by a skilled listener or observer without special equipment. It is named for Samuel F. B. Morse, an inventor of the telegraph.

How do you say SOS in Morse code?

The SOS distress signal is a continuous sequence of three dots, three dashes, and three dots, with no spaces between the letters (notated by the overbar). In International Morse Code, three dots form the letter S, and three dashes make the letter O, so "S O S" became a way to remember the order of the dots and dashes.