David L. Graham Books

Elementary Keyboarding
Elementary Keyboarding

By David L. Graham

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Introduces the letters, numbers, and symbols of the standard keyboard and provides exercises to acquire skill in typing.

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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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