A.In German, 2 dots over letters is called an 'umlaut'. It's found over 'A', 'O' or 'U', e.g. in 'fur', meaning 'for'. It changes the letter's inflection.
Q.What letter is represented by a single dot and a single dash
A.Dot dash in Morse Code stands for the letter A. Samuel Morse worked out the basics of his relay system in 1835, following his interest in telegraphy.
Q.What does s.o.s stand for?
A."S.O.S." does not stand for anything - it was adopted because the Morse code for these letters is easily recognised. "S" is 3 dots; "O" is 3 dashes.
Q.How many dots in letter in braille
A.Braille cells are constructed from 2, 3, 4 and 5 number of dots. 26 letters are used in the Braille alphabet, which represents the English letters.