Question about Texas Instruments TI-83 Plus Calculator

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I can't type in numbers or do simple calculations, it shows up as ERR:MEMORY, and the box that shows up is no longer solid but light and checkered.

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  • kakima May 11, 2010

    Apparently your memory is full. Press 2ND [MEM] 2. How much RAM is free (top line of the screen)?

    If there isn't much, try deleting some things to free up memory. Press 1 to select "All" and see if there's anything you can do without.



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Having gone over a month with no response, I assume this is no longer a problem.

Posted on Jun 08, 2010


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How do I fix an err: data type when trying to convert 0.1i into a fraction?

Set the Real/Complex mode to COMPLEX. (rectangular coordinates). See the screen captures that follow.


Sep 11, 2014 | Texas Instruments TI-84 Plus Silver...

2 Answers

ERR: MEM when trying to do Z-test/T-test

If you get Memory Error its meaninig that memory is insufficient to perform the instruction or function. You must delete items from memory
before executing the instruction or function.
Recursive problems return this error; for example,
graphing the equation Y1=Y1.
Branching out of an If/Then, For(, While, or Repeat
loop with a Goto also can return this error because
the End statement that terminates the loop is never

Mar 13, 2013 | Texas Instruments TI-84 Plus Silver...

2 Answers


Error Data Type mean that you entered a value or variable that is the wrong data type:
• For a function (including implied multiplication)
or an instruction, you entered an argument that
is an invalid data type, such as a complex
number where a real number is required. See
Appendix A and the appropriate chapter.
• In an editor, you entered a type that is not
allowed, such as a matrix entered as an element
in the stat list editor. See the appropriate
• You attempted to store an incorrect data type,
such as a matrix, to a list.

Jan 14, 2013 | Texas Instruments TI-84 Plus Calculator

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

My TI-84 cursor will not allow me to type anything

If the cursor is not allowing you to type anything that means either the calculator available memory is full or that you have exceeded the number of characters in a single command.
Clear calculator memory or just clear all entries (history) or split a complicated command into multiple shorter commands.

Nov 21, 2011 | Texas Instruments TI-84 Plus Calculator

1 Answer

The cursor is no longer solid, can't type on my TI-84 plus

According to the manual, this indicates that either the maximum number of characters have been entered at a prompt or memory is full.

Nov 21, 2011 | Texas Instruments TI-84 Plus Calculator

1 Answer

I entered and calculated data in L1 now when I try to graph the data i get an err: invalid dim Here are the steps that I took: 2nd Stats Plots enter Plot1 On Type: Box Plot XList: L1 Freq:...

If you have a frequency list it must be entered in a statistical list, L2, L3, ...or L6.
If the frequency of all elements is 1 you do not need to enter the frequency in a list. When you go to draw the box plot, the frequency will be set to 1.


Sep 10, 2010 | Texas Instruments TI-84 Plus Calculator

1 Answer

I cannot get numbers to show up. a checkered pattern light shows up

The checkered cursor means that memory is full. You must clear it or reset it.
Press [2nd][+] to access the (MEM)ory management function.
Select [7:Reset][1:All Ram][2:RESET] [ENTER].
Press [Clear] to clear the "Ram Cleared" message.

If that does not work, remove the main batteries for a while and resibsert them.

Mar 24, 2010 | Texas Instruments TI-83 Plus Calculator

1 Answer


To delete stuff from memory, press 2ND [MEM] 2 to display the Memory Management/Delete menu. Select the type of data you want to delete, or 1 for a list of variables of all types. Navigate through the list using up- and down-arrow and press DEL to delete the item from memory. Press 2ND [QUIT] to exit.

Feb 12, 2010 | Texas Instruments TI-83 Plus Calculator

1 Answer

The cursor blinks as a checkered black square and keys don't work

The memory of the calculator is ful,l that is why you cannot enter anything anymore. You must clear the RAM of the calculator.
Press [2nd][MEM][7:Reset][1:All Ram][2:Reset][ENTER]. Press CLEAR to clear the Ram Cleared Message.
If that does not work, pull the main batteries out of calculator and leave them out for a while (a few hours). Then reinsert them.

Hope it helps.
Thank you for using FixYa and rating the solution.

Dec 01, 2009 | Texas Instruments TI-83 Plus Calculator

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