Richard A. Zarro Books

The king of numbers
The king of numbers

By Richard A. Zarro

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Introduces the principles of the decimal system by relating the adventures of King Pi and his daughter, Princess Decimal Point.

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The enchanted mind
The enchanted mind

By Richard A. Zarro

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The phonebook
The phonebook

By Richard A. Zarro

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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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