Morse Code is a communication system that encodes letters, numbers, and punctuation into sequences of short and long signals, known as dits (·) and dahs (–). Developed by Samuel Morse and Alfred Vail in the 1830s–1840s, it was originally used for telegraph transmission but has since become a standard for signaling across many media. Each character in the plaintext is represented by a unique pattern of dots and dashes.
In written or visual form, letters are separated by spaces, and words are separated by a vertical bar or additional spacing. This simple binary system allows messages to be transmitted efficiently and recognized without ambiguity when the mapping is known.
Morse Code: Encoding
To encode a message, replace each letter with its corresponding Morse code sequence. Spaces between letters are used to separate characters, and a vertical bar "|" separates words. For example, encoding HELLO WORLD:
Plaintext: H E L L O W O R L D
Morse Mapping:
H → ····
E → ·
L → ·–··
L → ·–··
O → –––
(space) → |
W → ·––
O → –––
R → ·–·
L → ·–··
D → –··
Ciphertext: ···· · ·–·· ·–·· ––– | ·–– ––– ·–· ·–·· –··Each letter is carefully translated into its Morse representation, preserving spacing for clarity and readability. This ensures the encoded message can be correctly parsed and interpreted by the recipient.
Morse Code: Decoding
Decoding reverses the process. Each sequence of dots and dashes is mapped back to its corresponding letter, using spaces to distinguish individual letters and vertical bars for word breaks:
Ciphertext: ···· · ·–·· ·–·· ––– | ·–– ––– ·–· ·–·· –··
Morse Lookup:
···· → H
· → E
·–·· → L
·–·· → L
––– → O
| → (space)
·–– → W
––– → O
·–· → R
·–·· → L
–·· → D
Plaintext: HELLO WORLDMorse Code: Notes
Morse code remains a robust and simple signaling system, widely recognized and used in radio communication, emergency signaling, and amateur radio. Its strength lies in the clarity of binary representation and the ability to convey messages without relying on complex equipment or languages.