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