Question about Texas Instruments TI-86 Calculator

My friend gave me a TI86 graphing calculator. Thinking it worked i turned it on, and i didnt come on. So i changed the batteries and now it still won turn on!!! What do i do??!!

Hey,

The TI-86 will run without a backup battery, I had the same problem as you and then I remembered that the 86 unlike my 89ti has contrast settings that can be not visible. So take out your 86 press the on button, nothings will happen, then press the 2nd key and the up key. Repeat pressing the 2nd and up cursor over and over. I hope this helps you, pretty much all 86 problems can be fixed by yourself.

Posted on Nov 09, 2009

Maybe try changing the small memory battery inside, I think its a cr1616 or cr1620. If this doesn't work use it as a paperweight.

Posted on Apr 24, 2009

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Posted on Jan 02, 2017

Error 07 Syntax

Means you made a typing error while entering the equation. Using the minus sign instead of the negation sign (change sign) (-), can produce a syntax error. Maybe you need to explicitly type the multiplication sign

y= (-) 1.5*x +3

Try entering it as 3 - 1.5*x

Means you made a typing error while entering the equation. Using the minus sign instead of the negation sign (change sign) (-), can produce a syntax error. Maybe you need to explicitly type the multiplication sign

y= (-) 1.5*x +3

Try entering it as 3 - 1.5*x

Jun 11, 2014 | Texas Instruments TI-86 Calculator

Have you tried adjusting the contrast by pressing then releasing the 2nd key, then pressing and holding the up-arrow key?

Jan 26, 2014 | Texas Instruments TI-86 Calculator

That depends on what you need to do with the calculator. The TI-83 is better at some things, the TI-86 is better at some other things, and the TI-92 is better at yet other things.

The 83 and the 86 both use the Z80 processor, though the 86 is quite a bit faster. The 92 uses a 68000 processor. Though the 83 has a faster processor than the 86, the 86 has some additional calculus capabilities.

You can download TI's manuals from their support website.

There's a good comparison of present and past models here.

The 83 and the 86 both use the Z80 processor, though the 86 is quite a bit faster. The 92 uses a 68000 processor. Though the 83 has a faster processor than the 86, the 86 has some additional calculus capabilities.

You can download TI's manuals from their support website.

There's a good comparison of present and past models here.

Dec 03, 2011 | Office Equipment & Supplies

Try zooming in. Position the cursor near the point of interest then press [ZOOM] 2.

The function is interesting just to the right of the origin.

The function is interesting just to the right of the origin.

Feb 03, 2011 | Texas Instruments TI-83 Plus Calculator

Hello,

Use the TIconnect or TIGraphlink software to reinstall the programs. You will find the programs in the TI Program archives.

ftp://ftp.ti.com/pub/graph-ti/calc-apps/86/.

Hope it helps

Use the TIconnect or TIGraphlink software to reinstall the programs. You will find the programs in the TI Program archives.

ftp://ftp.ti.com/pub/graph-ti/calc-apps/86/.

Hope it helps

Jan 18, 2009 | Texas Instruments TI-86 Calculator

Hello,

Use the stat menu. Enter 1st member of a pair in List1, Enter 2nd member of pair in List2. Graph the data as a scatter plot in stats plots.

Hope it helps.

Use the stat menu. Enter 1st member of a pair in List1, Enter 2nd member of pair in List2. Graph the data as a scatter plot in stats plots.

Hope it helps.

Jan 15, 2009 | Texas Instruments TI-86 Calculator

try reseting ur calc. press 2nd->plus button->7->1->2 and then type the problem again

Jan 15, 2009 | Texas Instruments TI-83 Plus Calculator

Srry my friend the ti 83 is no magnificent Ti-89. meaning: you have to solve it yourself. There is a method for graphing though. Set the equation equal to zero and then plug the stuff on the other side of the equation into a graph by pressing y= and then typing it in. Then hit graph. Wait for the graph and then hit 2nd calc and select zeros. Bring your cursor using hte arrow keys close to where the line hits the x axis and press enter and then do the same except to the right of that point and then press enter twice and it will display the y which should be the answer

There are quadratic formulas for calculators programmed in tibasic for the calc but other than that there is no way to solve it

There are quadratic formulas for calculators programmed in tibasic for the calc but other than that there is no way to solve it

Apr 27, 2008 | Texas Instruments TI-83 Plus Calculator

Most likely you're trying to graph a function while you have the stat plot turned on. Turn off the stat plot and try it again.

Oct 16, 2007 | Texas Instruments TI-86 Calculator

Hello,

Here is how you make graphics of functions on the TI 86. The screen captures are from the TI86 Manual by texas Instruments.

Chapter 6 oth the manual concerns Grpahic tools.

Hope it helps.

Here is how you make graphics of functions on the TI 86. The screen captures are from the TI86 Manual by texas Instruments.

Chapter 6 oth the manual concerns Grpahic tools.

Hope it helps.

Sep 11, 2007 | Texas Instruments TI-86 Calculator

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