Down ROMemory Lane

A museum of vintage computing — from mechanical calculators to the first microcomputers.

This site documents hands-on experience with vintage and replica hardware, from Genaille rods, arithmometers, and calculators to PDP’s and TRS computers.

Also consider visiting my text adventure blog!

News: Check out calc-stack.com — an archive of HP-first calculator puzzles, each posted with a hint and worked solutions (verified on real emulators, other machines welcome too), now linked in the Calculators menu above.

Also new: the-enigma-challenge.com — Enigma decrypt puzzles built for Enigma Touch owners (and anyone with a simulator), solutions included, listed below in Useful Links.

Useful Links:

old-computers.com — The Museum of Old Computers
vintage-computer.com — Vintage Computer Forums
calc-stack.com — Calc Stack, HP-first calculator puzzles with solutions
the-enigma-challenge.com — The Enigma Challenge, Enigma decrypt puzzles with solutions included