Question about Texas Instruments TI-83 Plus Calculator

1 Answer

Weird lines, characters, symbols etc.

My calculator turns on, but anything I type in comes up as weird lines, characters, and symbols. Nothing is legible. The screen does not say "Batteries are low." I have replaced the AAA batteries just in case; I tried them in other devices and they worked in them but I still get the mess on the calculator screen. Do I need to change the lithium battery? I've had this for a number of years and never changed that. Or is it software issue?

Posted by on

1 Answer

  • Level 1:

    An expert who has achieved level 1.


    An expert who has answered 20 questions.


    An expert that hasĀ over 10 points.


    An expert whose answer gotĀ voted for 2 times.

  • Contributor
  • 35 Answers
Re: weird lines, characters, symbols etc.

It sounds like you need to put in a new set of back-up batteries. They can be found behind where the AA batteries are.

Posted on Aug 27, 2007

Add Your Answer

0 characters

Uploading: 0%


Complete. Click "Add" to insert your video. Add


3 Points

Related Questions:

1 Answer

My ti-84 calculator show unreadable code only?

Honestly, I do not understand what you mean. This calculator is designed to run commands one after the other. You may stack a few of them only if you do not need the output of the first ones.
Anyway, the memory is limited and that includes the register where the current line is stored. If you enter too many characters, the calculator stops accepting them and the cursor will change shape.

If memory is full you can no longer do anything. One simple way to regain some working memory (RAM) is to clear entries (the commands you typed). Press [2nd] [+] to enter memory managem2nt and select the command ClearEntries. You can also select ClearAllLists, or Reset. For the last choice you can then choose to reset ALL RAM.

Apr 28, 2012 | Texas Instruments TI-84 Plus Silver...

1 Answer

The left side of our ti-84 will not display after

Would it help if I told you that all the precision you are apparently looking for has no meaning?. In any number resulting from a scientific calculation only a limited number of digits are truly significant.
If you are entering characters (numbers, symbols, letters, etc.) the calculator keeps accepting them until its memory is full. At this point the cursor changes and go from a solid rectangle to a checkerboard-like rectangle, and you cannot enter anything anymore.

But if you are calculating some meaningful expression, the calculator displays the result according to the display mode you selected: Normal, Scientific, or Engineering). However, even in normal mode, if a number is too small, or too large, the calculator displays it in scientific format.

Scientific format
This format is as follows
  1. A minus sign if result is negative. If positive (+) is omitted.
  2. One digit
  3. Decimal mark (.) or (,) according to configuration
  4. A certain number of decimal digits (maximum 9)
  5. The E to symbolize ( times 10 to the power of)
  6. A minus sign (if exponent is negative), nothing if positive
  7. A maximum of 2 digits for the exponent of the power of 10. The maximum exponent you can have is 99
Let us count the number of possible characters in a display
-1.123456789E-12. That is 16 character slots.
Try playing with the number 987654321123456. All you will see is 9876543211E12. The 23456 sequence disappears, and all that "precision" is lost. Why, may I ask, should you worry that your calculator is not displaying more that 13 characters on the left.

This is what I understood from your one-liner of a question. And because it is a rather cryptic one-liner, I may have gotten the whole problem wrong. If that be the case, do not just shoot down the answer, post a comment to the solution describing what you are trying to do. If it is a bona fide worthwhile concern, I will do my best to help you with it. If on the other hand, it is jus plain idle doodling I will leave it at that.

Dec 19, 2009 | Texas Instruments TI-84 Plus Calculator

1 Answer

Hi, I can edit my table information in my calculator but am not able to graph from it and when i go to table it shows nothing.. what do i do?

From what I understand you want to draw statistical graphs (scatter plot, box plot, etc.) If you do not see anything it may be due to the fact that the statistical plots are turned off.

Type in the data in lists L1 and L2, etc. Press [2nd][QUIT]

Press [2nd][Y=] (STAT PLOT] . Select [4:PlotsOff] [ENTER] .
Screen displays Done

Press [2nd][Y=] (STAT PLOT] . Select [1:Plot1 Off].
  1. The configuration screen for Plot1 opens with the cursor blinking ON.
  2. Press [ENTER] to turn Plot1 ON.
  3. Use Down Arrow to move cursor to second line Type:
  4. Select the type of statistical plot. Use the right arrow to move highlight on one of the 6 types.
  5. Select the type:scatter, Xline, histogram, box plot, and press [ENTER] to validate the choisce.
  6. Use down arrow to select the Xlist: use [2nd][1] to choose L1, etc. and press [ENTER]
  7. Select the Y-List (L2) and validate by pressing [ENTER]
  8. Select the data-point mark.
  9. Press [GRAPH].
If you do not see the graph or if it is not well centred, press [ZOOM][9:ZoomStat] to restrict the screen to the data entered.

Hope it helps.
Thank you for rating the solution.

Dec 09, 2009 | Texas Instruments TI-83 Plus Calculator

1 Answer

Ti 83+ calc has garbled random characters when typing in #'s


You may have to force the calculator to boot up so that you can reinstall the OS. Details are in the article . Read the part on Ti83Plus family.
The article contains links to additional pages.
Hope it helps.

Oct 11, 2009 | Texas Instruments TI-83 Plus Calculator

5 Answers

Graphing issue

Damn dude i had the same problem, after a while searching for something that can put this problem away i've finnaly found the way \o/! Try APPS->TRANSFRM-> UNNINSTALL! Hope u can make it!


Feb 04, 2008 | Texas Instruments TI-84 Plus Calculator

1 Answer

Texas Instruments Ti-83 Plus Help

possibly water damage... there might be an indicater of this such as one on a cell phone. behind the battery possibly, a small sticker that changes color when dampened.

as for solutions... warrenty? lol

Jan 31, 2008 | Texas Instruments TI-83 Plus Calculator

1 Answer

Graphing multiple equations

The symbol on the left of the Ysub1,2,etc. determines what type of graph it is. move the cursor to the left of Ysub1,2,etc. and hit enter

Sep 18, 2007 | Texas Instruments TI-84 Plus Calculator

1 Answer

Weird display problem.....HELPME PLEASE!!!

I had the same problem Jozhy. I fixed it by re-upgrading the OS using the latest version of TiLP (TILP2 version 1.04). When I tried it using the version of TiLP 2 that I had it didn't fix the problem. I understand that the version before the one that was released a few months ago didn't flash the OS correctly. Try it again after downloading the latest program.

Mar 17, 2007 | Texas Instruments TI-83 Plus Calculator

1 Answer

Random characters lines and pixels

I've had a similar problem in the past with my TI-86. It still happens sometimes when I don't use it for a while. To fix it, all I did was set the screen to its darkest setting and left it on for 10 minutes (keep it from turning itself off, by pushing buttons every few minutes.) It works great, and the calculator is fine unless you leave it unused for a month or so. A similar solution may work for you.

Dec 12, 2006 | Texas Instruments TI-83 Plus Calculator

1 Answer

Calculator Stuck

Hi. I suspect your calculator BIOS is corrupted. Still looking for the download for that though. Do you have a USB link cable? If so, plug in your calc and check your device information. See if anything comes up.

Dec 08, 2006 | Texas Instruments TI-83 Plus Calculator

Not finding what you are looking for?
Texas Instruments TI-83 Plus Calculator Logo

1,584 people viewed this question

Ask a Question

Usually answered in minutes!

Top Texas Instruments Calculators Experts


Level 3 Expert

94198 Answers


Level 3 Expert

7983 Answers

Stevan Milanovic

Level 2 Expert

243 Answers

Are you a Texas Instruments Calculator Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides