Fred D Ignazio Books

Twenty-three learning games providing practice in spelling, fractions, French, word processing, and other skills, to be programmed on the VIC 20 computer.

The Apple playground

By Fred D Ignazio

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Apple Building Blocks

By Fred D Ignazio

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The Atari Playground Documentation Cassette Book

By Fred D Ignazio

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The Atari playground

By Fred D Ignazio

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Twenty-three learning games, grouped by subject, for use on an Atari computer. There are separate instructional sections for parents/teachers and for children.

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.