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Friday, November 29, 2013

RPN Scientific Calculator: Update

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As I mentioned in the last post about this project, I added a second MSP430 because the firmware was getting too large. In the end hardware...
Wednesday, October 30, 2013

Microcontroller Showdown, Part 2

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Here are the results for the tests I did with the MSP430 and the LPC1114 . Lately I have been busy with work so I haven't had a chance...
Monday, September 30, 2013

Microcontroller Showdown, Part 1

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Recently I bought some LPC1114 microcontrollers from NXP. They come in DIP packages and feature an ARM Core M0. Although comparing the clo...
Sunday, September 8, 2013

RPN Scientific Calculator: Second MSP430

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The next step for the calculator is the interface. The code for handling input ended up being fairly long but now entering numbers works ...
Saturday, August 17, 2013

RPN Scientific Calculator: Tweaks

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Recently I was able to get some new components and took the chance to make a few tweaks to the calculator. First of all, I hooked up a new ...
Monday, July 29, 2013

RPN Scientific Calculator: More CORDIC Routines

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After finishing the CORDIC routine for logarithms I started on the CORDIC routine for trig functions. For this I needed a different look up...
Wednesday, July 10, 2013

RPN Scientific Calculator: Division and Logarithms

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After rewriting the multiplication function I started on the division routine. There are several ways to do this. I used the subtract and ...