Cryptography on the HP-41

HP-41

Nourishing my hobby, I have been playing with cryptography on my favorite tool.

Now you can have perfect security for a file of up to 300 characters on the little calculator-computer.

If you happen to be interested, you will find the program at the usual place (isene.com).

I really enjoy programming the HP-41 🙂

And now that I have the newly created motherboard replacement (called the HP-41CL) from Monte Dalrymple (Systemyde), I will get to upgrade my HP-41 to massive memory and 50x speed. It’s X-Mas in August.

8 thoughts on “Cryptography on the HP-41

  1. Seems like an ironic twist, Mr. Freedom of Information. 🙂

    Just a joke, sarcasm resulting from ignorance, no doubt. (Even your post article was like Greek to me. Ha!) But happy for you having a hobby you love, nothing like it.

      1. Aha! I get it now. You’re not in Norwegian on a White Horse mode – it’s the other one, Man in Black. Makes total sense. 😉

      1. Indeed, some non-scienos read here 😀

        “And now that I have the newly created motherboard replacement (called the HP-41CL) from Monte Dalrymple (Systemyde), I will get to upgrade my HP-41 to massive memory and 50x speed. It’s X-Mas in August.”

        You’re nuts 😀

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