Question about Texas Instruments TI-85 Calculator

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My ti-85 won't turn on - Texas Instruments TI-85 Calculator

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TI calculators have an annoying habit of dimming the screen when the batteries are changed so that it appears as if the calculator isn't turning on. Turn the calculator on (or at least press the ON key). Press and release the 2ND key. Press and hold the Up-arrow key for a few seconds and see whether the screen becomes legible.

If this doesn't fix it, please reply to this post and we can go on from there.

Posted on Jan 02, 2011

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Posted on Jan 02, 2017

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I want to do a chi-square test on the TI-85


The chi-square test is used for a lot more than just contingency tables.

I found one program for the TI-86 (which is basically the same machine as the TI-85, only with more memory) which claims to do the chi-square goodness of fit test.

You might also want to browse through this archive.

Nov 29, 2012 | Texas Instruments TI-85 Calculator

1 Answer

I can't turn my ti 85 on


TI calculators have an annoying habit of dimming the screen when the batteries are changed so that it appears as if the calculator isn't turning on. Turn the calculator on (or at least press the ON key). Press and release the 2ND key. Press and hold the Up-arrow key for a few seconds and see whether the screen becomes legible.

Dec 04, 2010 | Texas Instruments TI-85 Calculator

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I have not used my TI-85 in 8 years. Inow it will not turn on. I put in fresh batteries. I stored it without batteries in it.


TI calculators have an annoying habit of dimming the screen when the batteries are changed so that it appears as if the calculator isn't turning on. Turn the calculator on (or at least press the ON key). Press and release the 2ND key. Press and hold the Up-arrow key for a few seconds and see whether the screen becomes legible.

Jun 30, 2010 | Texas Instruments TI-85 Calculator

1 Answer

How do you set the contrast on the TI-85? My


turn the TI-85 on and then hit the yellow "2nd" button and then down arrow. This may take several repeats. If it gets too light hit "2nd" and Up arrow.

May 12, 2010 | Texas Instruments TI-85 Calculator

1 Answer

Ti85


kinda. The TI-85 programs differently, lacks a table feature, is not upgradable, has redefinable keys, has a larger screen, is smaller, energy efficient, TI-86 semi-compatible, and is older.
The TI-84+ has archive memory, flash-upgradable, FSTN (clearer) screen, 16*8 screen, USB On-The-Go compliant, almost a centimeter longer, assembly language support, and a tad bit faster.

TI-82: $89
TI-83 Plus: $79-99
Free TI-85: $0
TI-84 plus: $119.99
TI-84+SE: $129-139
TI-89 Titanium: $149

Sep 06, 2008 | Texas Instruments TI-85 Calculator

4 Answers

TI-85 manual


I have the original TI-85 Graphics Calculator Guidebook (quite thick), but I no longer own the calculator. You are welcome to have it, since I was just about to throw it away. If you want it, please e-mail me at: srairigh@iserv.net within the next week, as I'd like to get it off my desk. Thanks! -- Sandy

Aug 13, 2008 | Texas Instruments TI-85 Calculator

3 Answers

No image display on screen


heres a good one: BUY A NEW ONE!!!!!!
(i dunno)

Oct 16, 2007 | Texas Instruments TI-85 Calculator

1 Answer

TI-85


Probably the problem is a tape connected by pcb and lcd. i got few ti-85 with this problem. i am just thinking how to repair it :| mat_one

Apr 06, 2007 | Texas Instruments TI-85 Calculator

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