Walt Morrey's design experience spans over 30 years of working with problems as diverse as high-resolution medical systems, ultrasound scanners, nuclear-radiation-hard guidance, and audio preamps, but recently he has been engaged in the design of embedded controllers. Walt has also designed automotive systems, scramblers for digital communications and signal processing. With 22 years as an independent contractor, he considers his new EE Expert role as still another opportunity to learn about new technologies. If you have questions or feedback for Walt, click here.

	STD Bus Can Be Enhanced by Adding a Power Bus The STD Bus has been around for a long time—ANSI/IEEE Std 961 was published in 1987 and is still extremely useful for embedded systems. The initial spec allowed for a 16-bit address bus, 8-bit data, 8-bit I/O address space, with a pin for I/O expansion (IOEXP). This is fine for most embedded systems, especially since CPU boards alone can now have all the computing power and memory required for even the most complex applications. This article looks at enhancing the STD Bus by adding a power bus.   Click here to read the complete article.
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Embedding Mixed-Signal Archive

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