![]() The Wikipedia page mentions several features aimed specifically at educational testing: "The TI-Nspire also features a "testing mode" LED indicator, designed to stop potential cheating, informing test supervisors that the calculator is still denying access to saved files and possibly restricting geometry features on the handheld during the test. Sure, a few of the hardcore nerds in engineering still have their HP somethings, and anybody doing real crunching will graduate to a full computer running one of the mathematical packages but TI is it everywhere else. TI's calculator division makes its money(and justifies its margins, I'm not sure that the price of a TI-83 has fallen to anything except inflation since I had to buy one back in secondary school) by being the de-facto standard calculator for education. ![]() ![]() Either it is reflexive control freakery or, more likely, it has to do with the demands of standardized testing.
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