Braille pattern dots-26 Braille pattern dots-26 The Braille pattern dots-26 ( ) is a 6-dot braille cell with the middle left and bottom right dots raised, or an 8-dot braille cell with the upper-middle left and lower-middle right dots raised. It is represented by the Unicode code point U+2822, and in Braille ASCII with the number 5. In unified international braille, the braille pattern dots-26 is used to represent an unrounded open-mid to close-mid front vowel , such as /e/, /e̞/, or /ɛ/ when multiple letters correspond to these values, a question mark, or is otherwise assigned as needed. Related to Braille pattern
Morse code and most versatile methods of telecommunication. The most common distress signal is SOS – three dots, three dashes, and three dots – internationally recognized by treaty. Beginning in 1836, the American artist Samuel F. B. Morse, the American physicist Joseph Henry, and Alfred Vail developed an electrical telegraph system. This system sent pulses of electric current along wires which controlled an electromagnet that was located at the receiving end of the telegraph system. A code was needed to transmit natural language using only these pulses, and the silence between them. Around 1837, Morse, therefore, developed an early forerunner to the