Museum of Pocket Calculating Devices

A gloriously niche corner of the internet just found its happy place: the Museum of Pocket Calculating Devices, a sprawling online shrine to vintage calculators, slide rules, abacuses, and other tiny number machines from decades past. But the real show wasn’t the museum itself — it was the comment section turning into a love letter, a comedy club, and a low-stakes civil war over calculator loyalty.

The biggest emotional meltdown? The Curta — a famously tiny hand-cranked calculator that inspired pure yearning. One commenter admitted it’s their dream machine and fantasized about calculating pi “one crank at a time,” which is either adorable or the nerdiest romance plot ever written. That same comment then swerved into indie-game chaos with a plea for a Curta simulator on the Playdate handheld, ending with a dramatic “I guess I am cursed with creating it.” Instant main-character energy.

Then came the calculator identity politics. One proud owner of classic Hewlett-Packard models declared they still use an old HP-11c and would “die on that hill defending RPN” — that’s Reverse Polish Notation, a calculator input style beloved by devotees and baffling to everyone else. Translation: yes, there is absolutely a button-layout culture war.

Elsewhere, the vibes were delightful: one person started planning a future donation of their own pocket computers, another showed up asking the important question — where are the watch calculators? — and someone dropped a fully dad-tier joke about buying a “pocket calculator” because surely you already know how many pockets you have. The museum is a history archive; the comments are a reunion of people who never stopped loving weird little machines.