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Review title: It was the best!
Product review: I am not sure if I would buy one of this today but my brother had one I used too much and it was a very nice calculator! I still have it. Well finished, 99 lines of program, 10 memories avaliable, built in programs including a root solver, 3x3 matrix algebra and numerical integration. It is a nom RPN calculator but this is not a problem! Display is only one line and only numbers. It had a very nice manual. A very nice calculator I would like HP to make again. Perhaps with more program lines avaliable. Modern models like 33S are much more powerfull but don't have the same quality. HP-20S was a real HP calculator!
