SwissMicros DM42n scientific calculator

The SwissMicros DM42n is a high-precision, professional scientific calculator designed as a modern homage to the legendary Hewlett-Packard HP-42S. It is manufactured by SwissMicros GmbH, a specialized tech company based in Stäfa, Switzerland.

Founded in 2011 by Michael Stein, SwissMicros began with the mission of resurrecting iconic RPN (Reverse Polish Notation) calculators that had been discontinued by major manufacturers. The DM42n is the brand's flagship model, featuring a robust stainless steel body with a matte black PVD coating. Unlike mass-produced consumer electronics, these devices are produced in small batches and are hand-finished by a dedicated team in Switzerland to ensure high tactile quality and technological precision.

The brand is entirely independent and privately owned by its original founders. It operates as a boutique manufacturer serving a niche global market of engineers, scientists, and calculator enthusiasts who value the RPN logic and the extreme 34-digit precision offered by the calculator's hardware and open-source 'Free42' software engine.