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At Barr Group, our mission is to help as many embedded systems engineers as possible make their products safer, more reliable and more secure. In addition to providing product design, consulting, and training services, we encourage our engineers to share their technical expertise by writing and teaching. We hope that you will learn something from these free how-to articles. Please respect the copyright notices at the bottom of each page.

Assembly vs. C: Which is Best for Microcontrollers?

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Given a particular programming problem, what language should you use to realize the solution? Your choice could very well affect the success or failure of the project. So you'd better choose wisely.

Introduction to the ATVEF Protocol Enhanced TV

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New standards are making the delivery of Web-based and enhanced content alongside television a reality. This article describes the ATVEF enhanced television standard and the requirements for designing ATVEF-compatible receivers.

Short Range Wireless Protocols: Bluetooth vs. IrDA

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As engineers design more and more products with embedded computer systems that require connections of one sort or another, we've got to pay attention to the ease with which these connections can be made. Short-range wireless protocols offer an attractive alternative to wired connections.

How to Design App-Ready Embedded Systems

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Bug fixes, patches, and third-party application programs are all possible in today’s more powerful embedded systems, but you need to plan for them at design time. This article shows you how.

How to Use the C Preprocessor's #error Directive

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One of the least used but potentially most useful features of the C preprocessor is the ANSI-specified #error directive. Here's a look at a couple of clever uses for #error that have proven invaluable in embedded software development.

The syntax of #error is very straightforward:

How Programmable Logic Works

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In recent years, the line between hardware and software has blurred. Hardware now engineers create the bulk of their new digital circuitry in programming languages such as VHDL and Verilog. This article will help you make sense of programmable logic.

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