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HP-41 PROGRAMMABLE CALCULATOR
From its introduction in 1979 until final production in 1990, the Hewlett Packard 41 Series Programmable Calculator reigned supreme as the trusted companion of professionals and students worldwide. Its instant success was due to innovation, quality and a well established base of loyal customers. The HP-41 became the object of fascination to a vast following of dedicated enthusiasts which sprang up to explore its intricacies and possibilities. Even today, its classic design makes it a useful and collectable tool with yet a few surprises left. This site is dedicated to documenting and preserving this amazing machine.
This library began around the start of the new millennium, and is today the most extensive and complete collection available anywhere. Great minds and companies created this material, and have generously allowed me to share it for the benefit and enjoyment of all. In keeping with this spirit, I have always provided all content online at no cost, and offered it for sale on DVD in PDF format. Now, I am pleased to announce you can download the entire HP-41 Archive DVD for free!