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
Polka-dot paint Polka-dot paint Polka dot paint is a paint which produces a polka dot pattern. The paint is traditionally an impossible object, and the subject of a fool's errand prank played upon apprentices in the decoration or construction trade, who are sent to obtain a bucket of polka-dot paint. A polka-dot paint effect has been produced in stage magic, and in the 1950s a polychromatic paint was invented which produced a dotted effect when dry. In the United States several magicians invented a trick in which they demonstrating painting with polka-dot paint. Prior to the performance, an object is pre-painted in