Chapter 1. Plessey

Table of Contents

1.1. Barcode Basic Knowledge
1.2. What is UPC
1.3. Application Field
1.4. Example
1.5. Technical Detail
1.5.1. Bit Pattern of Digit Mirrored Bit Pattern Design
1.5.2. Check Digit Calculation
1.5.3. Prefixes


1.1. Barcode Basic Knowledge

  1. Bar

    bit 1, the vertical black line, called black bar or bar or dark bar.

  2. Space

    bit 0, the vertical white line/space area, called white space or space or light space