Before telephones and the internet, long-distance communication relied on Morse code, a system of dots and dashes representing letters and numbers. Developed in 1837 by Samuel Morse and Alfred Vail, it revolutionized communication by allowing messages to be sent quickly over telegraph wires.
Each letter of the alphabet was assigned a unique combination of short and long signals (dots and dashes), making it efficient for long-distance messaging. The most famous Morse code signal, SOS (··· — — — ···), was adopted as an international distress call in 1905.
Though largely replaced by modern technology, Morse code remains an essential skill in aviation, military operations, and emergency situations, proving that even in the digital age, this simple code still has its place.