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Books : Computing & Internet : Hardware : Peripherals
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Updated to cover version 2.4.x of the Linux kernel, the second edition of Linux Device Drivers remains the best general-purpose, paper-bound guide for programmers wishing to make hardware devices work under the world's most popular open-source operating system. The authors take care to show how to write drivers that are portable--that is, that compile and run under all popular Linux platforms. That, along with the fact that they're careful to explain and illustrate concepts, makes this book very well-suited to any programmer familiar with C but not with the hardware-software interface. It's worth noting that the emphasis in the title is on "device drivers" as much as "Linux". This book will make sense to you if you've never written a driver for any platform before. It helps if you have some Linux or UNIX background, but even that is secondary as a prerequisite to C skill.For a programming text--and one concerned with low-level instructions and data structures, at that--this book is remarkably rich in prose. You'll typically want to read this book straight through, more or less skipping the code samples, before sketching out your plan for the driver you need to write. Then, go back and pay closer attention to the sections on specific details you need to implement, such as custom task queues. For coding-time details about specific system calls and programming techniques, count on the index to point you to the right passages. --David Wall
Topics covered: Techniques for writing hardware device drivers that run under Linux kernels 2.0.x through 2.2.x. Sections show how to manage memory, time, interrupts, ports and other details of the hardware-software interface.
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If you are fairly comfortable with the concept of photography but find the digital part a stumbling block, Digital Photography for Dummies should get you over the hump. Julie Adair King, a photographer and graphics-software specialist, deftly explains such concepts as resolution, f-stop, and compression.King is also refreshingly up-front about the differences between film-based and digital photography, spelling out the shortcomings of the latter in the early pages of the book. Her advice, from the most basic to the more advanced aspects of the field, is well thought out and simple without being condescending. She informs readers, for example, that you needn't use high pixel resolutions simply for placing images on a Web page. Such tips come as a relief to fledgling photographers on a budget, or novices who may be led to believe they have to use the highest-quality settings at all times.
Aside from the technical concerns of working with the camera and computer, King also provides sound tips on composition and lighting. And since retouching is one of the principal benefits of digital photography, King spends a fair amount of time discussing photo-editing software. And while most of the examples are in black and white, the most important examples are included in a 16-page colour plate section in the middle of the book.
For those of you considering jumping into the world of digital photography, you will be hard pressed to find a better guide to getting started than Digital Photography for Dummies. --John Frederick Moore, Amazon.com
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