Morse code
Morse code is a character-encoding system that represents letters and numbers with sequences of short and long signals. Developed for telegraphy, it can be transmitted using sound, light, and other signaling methods.
The popular belief that SOS stands for "Save Our Souls" is a myth. SOS has no inherent meaning—it was chosen as a distress signal because in Morse code it becomes "··· ─── ···," which is concise and unmistakable.
0