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How does a bar code reader work?
Fundamentals
Refers to the basic principles, concepts, or practices that serve as the foundation of a subject, skill, or activity.
Bucket
A cylindrical container used for carrying liquids or other materials; metaphorically, a category or area of consideration.
Theory
A set of principles on which the practice of an activity is based.
Timeline
A visual representation or chronological sequence of events, used to track the progression and milestones within a particular period or project.
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