473: Math Is Not the Answer
Embedded21 Mar 2024

473: Math Is Not the Answer

Philip Koopman joined us to talk about how modulo 255 vs 256 makes a huge difference in checksum error detection, how to get the most out of your checksum or CRC, and why understanding how they work is worth the effort.

Philip has recently published Understanding Checksums and Cyclic Redundancy Checks. He's better known for Better Embedded System Software as well as his two books about safety and autonomous vehicles:

Phil's YouTube page has a number of videos with great visuals to go along with his books. He also has three(!) blogs:

Currently, Phil is a professor at Carnegie Mellon University (his page there). You can follow him on LinkedIn.

Elecia read (and give 2.5 stars to) Symmetry: A Journey into the Patterns of Nature by Marcus du Sautoy: "Interesting but uneven, I kept reading to find out what horrible things math profs do to their children in the name of fun. Worth it when I finally got to a small section with Claude Shannon (and Richard Hamming). It didn't help with this podcast but it was neat."

Transcript

Nordic Semiconductor empowers wireless innovation, by providing hardware, software, tools and services that allow developers to create the IoT products of tomorrow. Learn more about Nordic Semiconductor at nordicsemi.com, check out the DevAcademy at academy.nordicsemi.com and interact with the Nordic Devzone community at devzone.nordicsemi.com.

Episoder(569)

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458: Fiddling, DIY, and Cursing

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457: Rubber Duck Phase Cancellation

457: Rubber Duck Phase Cancellation

Chris and Elecia chat about their ongoing efforts to create and learn. Then they answer some listener questions. Duck quacks do echo but the echoes seem to align in phase so that there is no interrup...

17 Aug 20231h 12min

456: Left Right Symmetry of a Banana

456: Left Right Symmetry of a Banana

Damien George spoke with us about developing with and for MicroPython while Elecia tries not to spill all the secrets about her client. To start at the beginning, you probably want to check out microp...

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455: Snaps!

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454: Printf Hello

454: Printf Hello

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453: Too Dumb to Quit

453: Too Dumb to Quit

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452: Numbers on Computers Are Weird

452: Numbers on Computers Are Weird

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451: From Concept to Launch

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