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    Helping my 4th grader with math - Rules of Algebra

    As I went though my 4th graders math book, I couldn't find definitions for the rules of Algebra that was clearly stated and didn't have variables in the examples. After perusing a few sites I found one that I thought would be good. Even so, I wasn't to pleased with their examples and removed...
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    Using a unipolar DAC as a bipolar DAC

    Hello, I'm currently working on a project that requires the use of an MCP475 DAC. Currently, it is being powered from the 3.3V source from on a Raspberry Pi and hence works in the range of 0V to 3.3V. I need it to work in the range of -3.3V to +3.3V. By reading the spec sheets I found that I...
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