Morse code a heliograph, a common flashlight, or even a car horn. Some mine rescues have used pulling on a rope - a short pull for a dot and a long pull for a dash. Morse code is transmitted using just two states (on and off). Historians have called it the first digital code. Morse code may be represented as a binary code, and that is what telegraph operators do when transmitting messages. Working from the above ITU definition and further defining a bit as a dot time, a Morse code sequence may be made from a combination of the following five-bit
Braille pattern dots-12 Braille pattern dots-12 The Braille pattern dots-12 ( ) is a 6-dot or 8-dot braille cell with the top two left dots raised. It is represented by the Unicode code point U+2803, and in Braille ASCII with "B". In unified international braille, the braille pattern dots-12 is used to represent a voiced bilabial plosive, ie /b/, and is otherwise assigned as needed. It is also used for the number 2. Related to Braille pattern dots-12 are Braille patterns 127, 128, and 1278, which are used in 8-dot braille systems, such as Gardner-Salinas and Luxembourgish Braille. In the Japanese kantenji braille,