There's a wonderful online emulation and analysis of that calculator by Ken Shirriff: http://files.righto.com/calculator/sinclair_scientific_simulator.html htt

There's a wonderful online emulation and analysis of that calculator by Ken Shirriff: http://files.righto.com/calculator/sinclair_scientific_simulator.html http://files.righto.com/calculator/sinclair_scientific_simul... (which was discussed previously https://news.ycombinator.com/item?id=6302364 https://news.ycombinator.com/item?id=6302364) The ability of the designers to do more with less is reminiscent of Steve Wozniak's work on the Apple I/II and other projects