William C. Hardy Books

VoIP Service Quality: Measuring and Evaluating Packet-Switched Voice

By William C. Hardy

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QoS: Measurement And Evaluation Of Telecommunications Quality Of Service

By William C. Hardy

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Quality of Service (QoS) is continuously growing in importance in the telecommunications industry because competition is growing fiercer by the day. By drawing on 30 years of experience, William C....

Red Archer

By William C. Hardy, Heather Brooks, H L Brooks

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Star Ship Luna

By William C. Hardy

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VoIP Service Quality

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Qos Measurement And Evaluation Of Telecommunications Quality Of Service

By William C. Hardy

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Qos Measurement And Evaluation Of Telecommunications Quality Of Service

By William C. Hardy

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Qos Measurement and Evaluation of Telecommunications Quality of Service

By William C. Hardy, Christopher Hardy

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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.