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HP-75C Handheld Computer

July 5th, 2018 (04:28 pm)

While up at MakeIt a few weeks ago, a fellow maker came up to me and handed me a Samsonite briefcase. With a wink and a smile, he said “Take this. You’ll like it.”

Ohhhkay, I’ll bite. Lets check this out.

HP-75C Handheld Computer

Opening up the case revealed… an HP 75C handheld computer, made by Hewlett Packard in the early 80s. This machine has some pretty nifty functionality. A built in BASIC, expandability, magnetic card reader for loading / saving programs, a full QWERTY keyboard, and rechargeable batteries.

Writing code on it is remarkably easy, with a clear easy to read screen and nice tactile feel to the keyboard.


  • Manufacture date: Around 1983

  • HP 8-Bit Capricorn

  • 24K, 16K user RAM

  • 32 character LCD

  • 1.4K magnetic cards for storage


It’s a great addition to the collection!


Posted by: Dvd Avins (barking_iguana)
Posted at: July 10th, 2018 02:39 pm (UTC)

The form factor is an extended version of my beloved 10-Series calculators.

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