Multiple choice

A method of coding BINARY numbers as a set of thick and lines on paper is

  1. Encoder

  2. Bar code

  3. Mnemonics

  4. Decoder

Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Bar codes represent data by varying the widths and spacings of parallel lines. They are an optical machine-readable representation of data, often used to encode binary identification numbers.