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kartetse,
Oh, yes, and they are very good machines. The old ones used only Reverse Polish Notation ("RPN") and a stack (and, no, that's not a joke); thus my question to rpn. The newer HPs, like my HP 49G, allow rpn or algebraic entry, downloadable programs/macros and even do symbolic math and graphing. I use RPN, since it is, IMHO, superior (i.e., quicker and easier) enough to more than warrant the short learning curve on stack operations.
BTW - The 49G has everything an engineer could want in a calculator, plus over a hundred features (literally) that I will never use.
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What's a party,
without a song?
Bards ROCK!
Party On!!
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