Wish to HP - Make a TI-68-like HP calc ;)

[Ron Ross]

Probably the closest to a Ti-68 is the Hp 20s. The Hp20s looks and feels very similar in layout and functions to your Ti-68. While the Hp 20s won't be quite as capable,it is an AOS calculator, the same as your Ti 68 and commes with 99 steps available in a keystep type programming. It is of similar build quality to your Hp 11c (not quite as good, but much, much better than your Ti-68). The Hp 20s can usually be found for about $50-60.
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I am an EE, have both, and I would choose the Hp 20s over the Ti-68 (I am probably a bit Hp biased too). Admittedly, I do know the Ti-68 has better functions. However, I normally use an RPN calculator, so I cannot actually claim with any authority that you should buy an Hp 20s (but you should).
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Just realized this is a very old post. Moderator, you are welcome to delete.