Timothy Orr Knight Books

Elvis Presley in the movies

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To the world he was the King of Rock and Roll, but Elvis Presley was also one of the top-10 movie stars of his era. Thirty-one of his films are included in this dazzling retrospective by film criti...

Megabucks from your microcomputer

By Timothy Orr Knight

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Commodore 64 BASIC programs

By Timothy Orr Knight

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Introduction to sound and graphics on the Atari ST

By Timothy Orr Knight

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Understanding Atari ST basic programming

By Timothy Orr Knight

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How to Convert ISBN-10 to ISBN-13 (and Vice Versa): A Complete Guide

If you’re in the world of books—whether as a publisher, librarian, bookseller, or avid collector—you’ve likely come across the terms ISBN-10 and ISBN-13. Understanding these formats and knowing how to convert between them is essential for maintaining consistency and compatibility in book records. In this post, we’ll cover everything you need to know about ISBN conversions, step by step.

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.