Question about Texas Instruments TI-84 Plus Calculator

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Where is the >?

I cannot find the > symbol on my TI-84

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Press 2ND [TEST] 3. TEST is on the MATH key, two keys down from the 2ND key.

Posted on Mar 29, 2014

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Posted on Jan 02, 2017

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SOURCE: When I type a linear equation into my TI 84-plus

Usually as soon as you start entering an expression in the Y= editor screen, the = sign is highlighted to ensure the drawing of a function. However, if you have previously used the Transfm application to draw dynamic graphs, it takes over the graphing functionalities from the native OS and you can only draw a single graph.

You can skip the next paragraph if you want

The reason is that dynamic graphing needs one or two parameters that can be changed during the graphing process and the graph redrawn with a new value of a parameter, and you end up with a family of curves differing one from the other by the values of one parameters. But since the calculator has space for 10 graphs at most, only one function can be highlighted.

To make a long story short, you must uninstall the Transfrm application from memory. The procedure will not erase it, just kick it out of memory.

Press the [Apps] key. Scroll down or up to reach the Transfm application. Select it and press [ENTER]. If that application was running you will see a new screen that tells you
Transfrm App

  1. Uninstall
  2. Continue

Graphing functionalities will revert to the native OS

Another potential culprit is the Inequalz App. To uninstall it, do as for the Transfm and select the option that will unload it from memory.

Posted on Jan 15, 2010

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SOURCE: Change TI 84 OS to TI 89 OS??

And why, pray tell, would you do such a thing? You will ruin your Ti84 Plus Silver Edition and will not have a working TI89. Besides, TI connect will refuse to transfer it.
If you like the capabilities of the TI89 Titanium, buy a cheap or used one on e-bay or and spare your TI84PLus SE.

Posted on Feb 14, 2010

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Ti 84 mode a+bi you can not add 5 at 90 degrees to 5 at -90 degrees. You need to switch to exponential mode e^ and enter as 5 e^(pi/2i) this is ok for 180 degrees. however what do you do when...

You can add angle measures by hitting 2nd angle and choosing the degree option. Put this after a value (e.g. 90(degrees symbol)) and add you can add angles that way. Be sure that you are in degree mode when doing this (you can use the radian symbol for adding radians too). Still, this is a very tedious process and I recommend just adding angles as regular values (e.g. 90 + 200 = 290) and correcting for degrees manually.

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

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My TI-84 calculator says "Garbage Collecting" and won't work, how should I reset it?

Found at

What can be done if a TI-83 Plus family or TI-84 Plus family calculator displays Garbage Collecting... for more than 20 minutes?

The garbage collection allows the cleanup of unused archive memory. It deletes unarchived variables from the user data archive and it rearranges the remaining variables into consecutive blocks. When a variable is unarchived, the Archive free memory amount increases immediately, but the space is not actually available until after the next garbage collection.

If garbage collecting is more than 20 minutes, the calculator has possibly locked up and will need to be reset.

The reset procedure will delete all the items that are in the memory of the graphing calculator. Use the reset procedure below:
• Remove 1 AAA battery.
• Press and hold down the [DEL] key.
• While holding down the [DEL] key, replace the AAA battery, and press the [ON] Key.

The message Waiting... Please install calculator software should appear. At this point, it will be necessary to reinstall the calculator's operating system.
• Connect the calculator to the computer using the TI Connectivity Cable or DirectUSB Cable.

Please post if this was helpful...
• In Windows®, click on Start >> Programs >> TI Tools >> TI Connect >> TI OS Downloader.
• In MacOS® X, open Hard Drive >> Applications >> TI Connect >> TI OS Restore.
• Follow the directions on screen to reinstall the calculator's operating system.
Access the link following for detailed instructions on how to complete operating system installation.

Oct 14, 2010 | Texas Instruments TI-84 Plus Silver...

1 Answer

On the TI-84 Plus, where do I find the "%" symbol

You don't. If you need one of the functions or commands that have a "%" in the name, you'll have to access it from the catalog or a menu. You can't put the percent symbol into a prompt or text string.

Jul 09, 2010 | Texas Instruments TI-84 Plus Calculator

1 Answer

How do you put degrees mins & secs in a ti 84 plus

The DMS symbols are available under the ANGLE menu
Press [2nd][APPS] (ANGLE)
Under that menu you find the degree and minute symbol. To enter the seconds unit you use the key sequence [ALPHA][+] (")
To enter 1deg 15 minutes and 37 seconds
1 [2nd][APPS] [1:deg] 15[2nd][Apps][2:'] 37 [ALPHA] [+]

To enter a number in decimal degrees (eg 15.37)
  1. If angle unit is the degree just enter 15.37
  2. If angle unit is the radian , you must specify the angle unit as degrees: To enter 15.37 degrees you type 15.37 [2nd][Apps][1: degree] [ENTER].
To convert from DMS to DD and from DD to DMS, you use the sequence [2nd][Apps][4:|=>DMS].

Feb 08, 2010 | Texas Instruments TI-84 Plus Calculator

1 Answer

How do I find degrees minutes and seconds on my ti 84 plus?

On this family of calculators, you do as follows
  1. Enter the first number (degrees), ex:15
  2. Press [2nd][APPS] (ANGLE) to access the Angle functions
  3. Select [1: degree symbol] [ENTER]
  4. Main screen shows 15 deg
  5. Enter the minutes, ex 25
  6. Press [2nd] [APPS](ANGLE) to access Angle functions
  7. Select [2:' apostrophe] [ENTER]
  8. Screen echoes 15 deg 25'
  9. Enter the seconds number, ex 32
  10. Press [ALPHA][+] (") to access the double quotation mark.
  11. Screen echoes 15 deg 25' 32"
  12. Press [ENTER]
  13. Calculator converts this in decimal degrees 15.42555556

To convert this back to DMS, press [ANGLE][|=>DMS][ENTER] and the calculator displays the original value 15 deg 25' 32"

Jan 11, 2010 | Texas Instruments TI-84 Plus Calculator

1 Answer

I get a access denied error when i try to transfer programs to my ti 84 plus

Here is what the TI Knowledge Base has to say about resolving the problem you have.Hope it helps.

How do I resolve the error "Access Denied" when transferring an App or OS using the TI Connect software?

The error "Access Denied" indicates that the TI-Connect software could not complete the current transfer due to an unforeseen error. Please try the following troubleshooting steps if the error persists.
Perform a manual "Garbage Collect" on the calculator (TI-83 Plus and TI-84 Plus family only):
• Press [2nd] [0] [TAN] [ENTER] [ENTER] [2].
NOTE: A manual "Garbage Collect" can take up to 5 minutes to complete.
• Attempt to transfer data to the calculator.
Uninstall and reinstall the TI-Connect software:
• Go to Start >> Settings >> Control Panel or Start >> Control Panel and select "Add or Remove Programs".
• Locate the TI-Connect software in the list and then choose "Remove".
• Once the software uninstall process has completed, please shut down and power off the computer.
• Wait approximately 20-30 seconds and then reboot into Windows.
• Download and install the latest version of the TI Connect software from the TI Connect Software home page.
• Once the TI Connect software install process has completed, restart the computer before using TI-Connect.
• Attempt to transfer data to the calculator.
If the above troubleshooting steps do not work, please contact TI-Cares Technical Support for additional troubleshooting.

Oct 28, 2009 | Texas Instruments TI-84 Plus Calculator

1 Answer

TI 84 won't turn on. New batteries installed. TI Connect recognizes device and I installed new OS. Brightness is not the issue. Any suggestions? This is one of student's calculators. Thank you.

Sorry, answer was posted as a clarification request.

Here it is from the horse's mouth (TI Knowledge base)

For the TI-83 Plus Family, TI-84 Plus Family:

Caution: The resets described in these troubleshooting steps will cause a lossof applications, programs and data. If at all possible please create a backup using TI Connect™ first.
  1. Try a new set of AAA batteries.
  2. Adjustthe contrast by pressing and releasing the [2nd] key followed bypressing and releasing the up arrow; repeat as necessary. To adjust orlighten the display, use the down arrow.
  3. Remove one of theAAA batteries. Press and hold the [CLEAR] key. While holding [CLEAR],reinsert the AAA battery and then turn the calculator on. Thecalculator should display the message "RAM Cleared". Release the [CLEAR] key and then press it one more time to remove the message.
  4. Removeone of the AAA batteries. Press and hold the [DEL] key. While holding[DEL], reinsert the AAA battery and then turn the calculator on. Thecalculator should display "Waiting...Please install calculator software now". Follow the instructions for the TI-83 family or TI-84 Plus family to reinstall the calculator operating system (see below.)
  5. Removeall of the batteries including the round lithium battery for 5 minutes.After the 5 minute period, reinsert all of the batteries and turn thecalculator on. Adjust the contrast if necessary.

Reinstalling the OS fot the TI84Plus

How do I correct the Error Waiting...Please Install Calculator SoftwareNow message on my TI-83 Plus family or TI-84 Plus family calculator?

If an operating system (OS) update fails or is interrupted, the calculator will be in an inoperable state with the message Waiting...Please install calculator software now.The most common cause of a transfer being interrupted is updating theoperating system on a calculator with low batteries. Users will need touse the TI Connectivity cable and the TI Connect software to send theoperating system to the calculator. Make sure to have the latestversion of TI Connect installed on the computer.
In order to install the software please follow these steps:
1. Connect the TI Connectivity cable between the computer and the calculator.
2. Click on Start >> Programs >> TI Tools >> TI Connect >> TI OSDownloader
3. Follow the on-screen directions to reinstall the calculator's OS.
Ifthe message "Error! Press any key to turn unit off. Then turn unit backon." appears on the graphing calculator, quickly, remove one batteryfrom the calculator and reinstall it while the transfer is taking place.

Hope it helps.

Oct 19, 2009 | Texas Instruments TI-84 Plus Silver...

1 Answer

Only half my screen is working What should I do

reset your ram. you can hit 2nd>Mem(plus symbol)> reset > defaults. This will solve your problem.

Mar 16, 2009 | Texas Instruments TI-84 Plus Calculator

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