Samuel Finley Bliss, an American, wrote the Morse alphabet.
Morse) was invented in 1837,
It consists of a dot (. ) and dash (-). 1, a point is a basic signal unit, and the length of a pen = the time length of three points. 2. In a letter or number, the interval between points and strokes should be the time length of two points. The interval between letters (numbers) and letters (numbers) is 7 o'clock. Morse code plays an important role in early radio, which every radio communicator needs to know. Due to the progress of signal technology, countries have stopped using Morse code in 1999, but it is widely used in real life because it occupies the least bandwidth and has technical and artistic characteristics. Morse code
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It consists of two basic signals and different intervals: short-point signal, reading "di"; Press and hold the long signal "-"for a certain time and read "Da". Interval time: down,1t; ; Answer, 3t; Tick-tock,1t; ; Between letters, 3t; Between the lines, 5t.
The earliest Morse code was dots and dashes representing numbers. Numbers correspond to words. You need to look up a code table to know the numbers corresponding to each word. You can click, stroke and pause with the electric keys. Although Morse invented the telegraph, he lacked relevant professional knowledge. He signed an agreement with Alfred Weil to help him make his own system.
Morse code
Build more practical equipment. Alfred Weil conceived a scheme in which each character and punctuation can be sent independently of each other through dots, strokes and pauses in the middle. They agreed to include this scheme of marking different symbols in Morse's patent. This is now known as American Morse code, which was used to transmit the world's first telegram.
This code can be transmitted by a smooth-pitched, intermittent radio signal, usually called continuous wave, abbreviated as CW. It can be an electronic pulse in a telegraph line or a mechanical or visual signal (such as a flash).
Generally speaking, any coding method that can express written words with variable-length signals can be called Morse code. However, this term is only used to refer to two Morse codes representing English letters and symbols: American Morse code is used in cable telegraph communication system; The international Morse code still in use today only uses dots and dashes (no pause).
The telegraph company charges according to the length of the letter to be sent. The quotient code carefully designed a five-character code and sent it as a word. For example: BYOXO ("Do you want to climb?
Not in the mood? "); Why don't you answer my question? " ); AYYLU ("I don't know.
Coding, repetition is clearer. ")。 These five-character abbreviations can be sent separately in Morse code. In network language, we will also say some of the most commonly used Morse business codes. Q- abbreviations and Z- abbreviations are still used in amateur radios: they were originally used to exchange information between operators, such as communication quality, frequency changes and telegraph numbers.
1838 65438+1October 8th, Erfield Weil showed a telegraph code using dots and dashes, which is the predecessor of Morse code.
Morse code, as an information coding standard, has a very long lifetime that other coding schemes can't surpass. Before 1999, Morse code has been used as an international standard for maritime communication. 1997, when the French navy stopped using Morse code, the last message was: "Attention, everyone, this is the last cry before we are silent forever!"
I wish you a promotion step by step.
I look forward to your adoption. Thank you.