22 Facts About Telegraph code

Telegraph code is one of the character encodings used to transmit information by telegraphy.

Each Telegraph code point is made up of a number of elements arranged in a unique way for that character.

For instance, American Morse Telegraph code had about five elements, rather than the two of International Morse Code.

For instance, Morse Telegraph code for E, the most common letter in English, is a single dot, whereas Q is.

The Telegraph code used in France was the Chappe Telegraph code, named after Claude Chappe the inventor.

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The British code was necessarily different from that used in France because the British optical telegraph worked in a different way.

The Telegraph code book was revised and simplified in 1795 to speed up transmission.

The Telegraph code was in two divisions, the first division was 94 alphabetic and numeric characters plus some commonly used letter combinations.

The Telegraph code was revised again in 1809 and remained stable thereafter.

That is, each Telegraph code element consisted of one of three distinct flag positions.

The earliest code used commercially on an electrical telegraph was the Cooke and Wheatstone telegraph five needle code.

Telegraph code planned that numbers sent over the telegraph would be used as an index to a dictionary with a limited set of words.

Vail invented an extended Telegraph code that included Telegraph code points for all the letters so that any desired word could be sent.

The Gerke Telegraph code had only one length of dash and all inter-element spaces within a Telegraph code point were equal.

The Chinese telegraph code uses a codebook of around 9,800 characters which are each assigned a four-digit number.

The Chinese telegraph code is still used by law enforcement because it is an unambiguous method of recording Chinese names in non-Chinese scripts.

The Baudot Telegraph code was a 5-bit binary Telegraph code, with the bits sent serially.

The five bits of the Baudot Telegraph code are insufficient to represent all the letters, numerals, and punctuation required in a text message.

Corruption of a TTS transmitted letter Telegraph code just resulted in one wrong letter being printed, which could probably be corrected by the receiving user.

UniTelegraph code maintained ASCII characters at the same Telegraph code points for compatibility.

An example of this can be seen in the 1837 Steinheil Telegraph code, which is nearly identical to the 1849 Steinheil Telegraph code, except that they are represented differently in the table.

International Morse code was commonly used in this form on submarine telegraph cables.