Morse code

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Telegraph key

The Morse code is a system of representation of letters, numbers and punctuation signs through a coded signal sent intermittently containing a code "told" binary[1] but which contains intervals (4 types of intervals), short signs also called dits or dots (·) and long signs also called dahs or dashes (-). It was developed by Samuel Morse in 1835.[1] The Morse code can be used for sending encrypted messages for example the Fractioned Morse Encryption method developed by M. E. Ohaver.[2]

The Morse code

The letters

Letter Code Letter Code Letter Code
A .- J .--- S ...
B -... K -.- T -
C -.-. L .-.. U ..-
D -.. M -- V ...-
E . N -. W .--
F ..-. O --- X -..-
G --. P .--. Y -.--
H .... Q --.- Z --..
I .. R .-.

The numbers

Number Code
1 ·----
2 ··---
3 ···--
4 ····-
5 ·····
6 -····
7 --···
8 ---··
9 ----·
0 -----

Representation

An example of a representation of a text in Morse code is shown below:

-.-. .-. .   .-  -   ..  --- -.  .-- ..  -.- ..
C    R   E   A   T   I   O   N   W   I   K   I

References

  1. 1.0 1.1 Petzold, Charles (2000). Code:The Hidden Language of Computer Hardware and Software. Redmond, Washington: Microsoft. p. 1-14. ISBN 0-7356-0505-X. 
  2. Salomon, David (2005). Coding for Computer Communications. New York: Springer. p. 222. ISBN 978-0387-21245-6.