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Review title: Make sure it is a Plus!
Product review: This is a great calculator, but because Amazon does not have a category for old ti-92's, people often sell these as PLUS models. The only major differences are things Linear Algebra, upgradable firmware, and extra memory. You will want the extra memory if you write custom programs. Before buying one of these, email the seller and confirm it is a plus model, unless you dont care. Enjoy!Art Ketcham
