Multiple choice

Code consisting of bars or lines of varying width or lengths is known as

  1. An ASCII code

  2. A magnetic tape

  3. An OCR scanner

  4. A bar code

  5. None of these

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

A barcode is a method of representing data in a visual, machine-readable form. It consists of parallel lines (bars) of varying widths and spacings that can be read by optical scanners.