Binary code practical applications such as computers, electric circuits, and more. The bit string is not the only type of binary code. A binary system, in general, is any system that allows only two choices such as a switch in an electronic system or a simple true or false test. Braille is a type of binary code that is widely used by the blind to read and write by touch, named for its creator, Louis Braille. This system consists of grids of six dots each, three per column, in which each dot has two states: raised or not raised. The different combinations
Dot Cotton she isn't scared of Halloween but of the world. Dot reveals that she thinks she is going blind but then kicks Patrick out of the house. When he leaves, it is revealed that Dot cannot see anything clearly. Patrick books Dot a doctor's appointment; the doctor suspects age-related macular degeneration, which is later confirmed. Dot starts treatment but she is annoyed that her eyesight does not improve much. She turns down Ronnie's offer of paying for surgery to permanently fix her sight. Abi invites Dot to Christmas in Exeter but Dot insists she has plans of her own. The launderette