Comments on RPN

I’ve started falling in love with reverse Polish notation (RPN) again. This mostly comes from using PCalc on my iPhone for a lot of calculations, lately. Like so many other kids, I grew up using the Texas Instruments, starting with the TI-82 and TI-85. In college, I “upgraded” to a

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Blockchains Explained

I found a really neat demonstration of how blockchain works. The video, created by Anders Brownworth, is on YouTube: It provides a walkthrough that takes us from cryptographic hashing, to blocks, to blockchains, to distributed blockchains, to distributed ledgers. It’s the clearest discussion of blockchain’s I’ve ever seen. Even better,

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A Love Note to Kermit

Occasionally, I post some pictures and notes on hardware projects we have going on in the Cybernetics Laboratory, which is to say, my desk. One thing that always comes up a program called Kermit, originally built by Columbia University, now maintained by the Kermit Project. Kermit has been around since

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