Gary Pattillo Books

Sudoku for Teachers
Sudoku for Teachers

By Gary Pattillo

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Sketch Pad
Sketch Pad

By Gary Pattillo

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Quick Sudoku for Nurses
Quick Sudoku for Nurses

By Gary Pattillo

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What is an EAN and How Does it Relate to an ISBN?

If you’ve ever purchased a product online or in a store, you’ve likely come across a barcode. Behind these barcodes lies a standardized system that makes modern commerce possible. Two key codes often encountered are the EAN (European Article Number) and ISBN (International Standard Book Number). But what are they, how are they connected, and why are they so crucial? Let’s explore.

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