via sound waves or visible light, such that it can be directly interpreted by persons trained in the skill. Morse code can be memorized and sent in a form perceptible to the human senses, e.g. The letters of a word are separated by a space of duration equal to three dits, and words are separated by a space equal to seven dits. Each dit or dah within an encoded character is followed by a period of signal absence, called a space, equal to the dit duration. The duration of a dah is three times the duration of a dit. The dit duration is the basic unit of time measurement in Morse code transmission. Each Morse code symbol is formed by a sequence of dits and dahs. There is no distinction between upper and lower case letters. International Morse Code encodes the 26 Latin letters A through Z, one non-Latin letter, the Arabic numerals, and a small set of punctuation and procedural signals ( prosigns).
Morse code is named after Samuel Morse, one of the inventors of the telegraph. Morse code is a method used in telecommunication to encode text characters as standardized sequences of two different signal durations, called dots and dashes, or dits and dahs.
This Morse key was originally used by Gotthard railway, later by a shortwave radio amateur
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