Morse code is a method of encoding text characters using sequences of dots . and dashes -.
It was developed in the 1830s and used extensively in telegraphy.
Structure
Each letter and number has a unique sequence:
Letters
A .-
B -...
C -.-.
D -..
E .
F ..-.
G --.
H ....
I ..
J .---
K -.-
L .-..
M --
N -.
O ---
P .--.
Q --.-
R .-.
S ...
T -
U ..-
V ...-
W .--
X -..-
Y -.--
Z --..
Numbers
0 -----
1 .----
2 ..---
3 ...--
4 ....-
5 .....
6 -....
7 --...
8 ---..
9 ----.
To write
- Separate letters with a space.
- Separate words with
/(slash).
Examples
HELLO = .... . .-.. .-.. ---
WORLD = .-- --- .-. .-.. -..
HELLO WORLD = .... . .-.. .-.. --- / .-- --- .-. .-.. -..
When using a flashlight
- Dot (.) = short flash (about 1 second)
- Dash (-) = long flash (about 3 seconds)
- Between parts of the same letter = pause 1 second
- Between letters = pause 3 seconds
- Between words = pause 7 seconds
Example: "HI" = ".... .."
- Flash short 4 times (H), pause 3s
- Flash short 2 times (I)
Use consistent timing to ensure clarity.