David J. Perdue Books

Competitive MINDSTORMS

By David J. Perdue

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The Unofficial LEGO MINDSTORMS NXT Inventor s Guide

By David J. Perdue

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The unofficial LEGO Mindstorms NXT 2.0 inventor s Guide

By David J. Perdue

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Helps readers harness the capabilities of the LEGO MINDSTORMS NXT set and effectively plan, build, and program NXT 2.0 robots, offering an overview of the pieces in the NXT set, practical building...

The Unofficial LEGO MINDSTORMS NXT 2.0 Inventor's Guide

By David J. Perdue With Laurens Valk

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The LEGO® MINDSTORMS® NXT 2.0 set offers hundreds of building elements, programming software, and powerful electronics that you can use to create amazing robots. But where do you begin?Th...

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.