<div dir="ltr"><br><br>On Sunday, March 9, 2014 10:05:14 AM UTC-5, Antoine Pitrou wrote:<blockquote class="gmail_quote" style="margin: 0;margin-left: 0.8ex;border-left: 1px #ccc solid;padding-left: 1ex;">> tiny minority of users who are numerically naive TI-89 users.
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<br>I'm surprised: are physical calculators (TI-89) still in use today?
<br></blockquote><div><br></div><div>Oh my, yes. They are the premier programmable graphing calculator</div><div>today (not the only one, or course) that supports advanced computation</div><div>(calc, linear algebra, &c) and with not only polar and rect coord graphing</div><div>but also 3D graphing. Its native language is BASIC, in the calculator </div><div><span style="font-size: 13px;">supports a </span>plethora<span style="font-size: 13px;"> of applications for science, business, academia, </span></div><div><span style="font-size: 13px;">engineering, and also a host of organizer apps like calendar, notepad, </span></div><div><span style="font-size: 13px;">spread sheet (yes, really) and more. Its a phenomenal device, really.</span></div><div><span style="font-size: 13px;"><br></span></div><div><span style="font-size: 13px;">The TI84+ is also still marketed heavily; and it has been updated lately</span></div><div><span style="font-size: 13px;">with a color screen. It is not sufficient for college engineering work, but </span></div><div><span style="font-size: 13px;">its fine for high school and general programming/graphing. Its language</span></div><div><span style="font-size: 13px;">is also BASIC.</span></div><div><span style="font-size: 13px;"><br></span></div><div><span style="font-size: 13px;">Cheers</span></div></div>