Powering up a module from the IBM 604: an electronic calculator from 1948

Article excerpt

A technologist successfully powered up a vintage thyratron tube module salvaged from an IBM 604 electronic calculator, a 78-year-old machine that once performed calculations for engineers and scientists. The module, which uses vacuum tubes instead of transistors, still functions despite decades of dormancy. The restoration effort involved careful testing and analysis of the original components, offering a hands-on glimpse into mid-century computing hardware design. The IBM 604 was a significant early computer, capable of performing arithmetic and logical operations at a speed remarkable for its era. This kind of reverse-engineering and hardware archaeology appeals to hobbyists interested in computing history and the evolution from tube-based to solid-state electronics.