Il codice morse |
|||
|
01/01/2002 |
|
Tutti probabilmente conoscono il codice morse, quello inventato da Samuel Finley Breese
Morse nel 1838. Si tratta di una serie di impulsi elettrici di durata
breve (punti) o lunga (linee)
codificati in modo da corrispondere alle lettere dell'alfabeto. Se non
conosci la corrispondenza tra lettere e simboli, la trovi qui accanto. Each of you know the Morse code, created by Samuel Finlay Breese Morse in 1838. It’s made by two electrical impulses, short length of time (dots) or long (lines): the sequence of them is codified such to correspond to the alphabet characters. In this table you can find the equivalence of characters and their Morse code translation. |
Morse, in questo modo, utilizzò il tempo per discriminare un carattere dall'altro. Era pertanto sufficiente un solo filo elettrico per trasmettere tutti i caratteri. La cosa che forse non tutti sanno è come Morse fece l'associazione tra i simboli e le lettere. |
Morse, as you see, used the time to differentiate between characters. But maybe you are curious to know how Morse conceived the association between characters and impulses. |
The history tells that Morse went to visit a friend, a typographer who was using characters to compose his texts, so Morse observed that the character “e” appeared most frequently, and decided to assign to it the shorter code, a single dot. He followed this method, shorter codes to the recurrent characters in sentences, and longer codes to the characters used less frequently. So he optimized the times of transmission of messages. |
01/01/2002 |