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The first long-distance message in dot-and-dash Morse code traveled from Washington to Baltimore on Friday, May 24, 1844, 175 years ago.
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The braille language system is the primary means of communication for a person with profound visual impairment. The system is based on forming symbols for each letter or number by combining 6 points. Raised dots represent a letter or script sign in visual characters.
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And it is that the first binary numbers come from the 'I Ching', a classic work of Chinese origin whose first texts are dated between 1200 and 1000 BC.
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A sign language or sign language is a natural language of expression and gesture-spatial configuration and visual perception, thanks to which deaf people can establish a channel
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Just on that day in 2002, the United States Congress passed resolution 269, acknowledging that it was the Italian Antonio Meucci, who invented the telephone in 1854 (a device that the inventor called a teletrophone) simply to be able to connect his office with the bedroom where his sick wife lay.