Whether your TI-84 Plus CE is throwing memory errors, loaded with a classmate's old programs, or needs to be cleaned up before a test, the fix runs through one menu: 2nd + (MEM). This guide covers checking how much space you have, deleting or archiving individual items, and what "clearing your calculator for an exam" actually means in practice.
Check how much memory is free
- Press
2nd+(MEM) to open the MEMORY menu. - Choose
2: Mem Management/Delete…. - Look at the top of the screen: RAM FREE shows available RAM, and ARC FREE shows available archive space.
The TI-84 Plus CE has two kinds of memory. RAM is the active workspace where lists, variables, and unarchived programs live — and where the calculator does its thinking. Archive (ARC) is long-term storage; it's many times larger than RAM and holds apps plus anything you've archived. Most "memory full" problems are RAM problems, because RAM is the small one.
Delete individual items
From the same Mem Management/Delete screen:
- Choose a category —
7: Prgm…for programs, or the matching entry for lists, pictures, apps, and so on. (Choosing1: All…lists everything at once.) - Move the cursor arrow to the item you want gone.
- Press
DELand confirm the deletion.
This is the precise tool: it removes exactly one item at a time, unlike a RAM reset, which takes everything at once. If you actually want the nuke-it option, that's covered in /guides/reset-ti84/.
Archive instead of deleting
If RAM is tight but you don't want to lose anything, move items to archive instead:
- In
2: Mem Management/Delete…, choose7: Prgm…(or another category). - Put the cursor on an item and press
ENTER. An asterisk (*) appears — the item now lives in archive, not RAM. - Press
ENTERagain to unarchive it when you need it back.
Archived programs free up RAM, survive a RAM reset, and stay put until you unarchive or delete them. The trade-off: an archived program can't run until you unarchive it (trying gives ERR:ARCHIVED). A good routine is to keep only the programs you're actively using in RAM and archive the rest.
What to do when memory is "full"
| Symptom | Likely cause | Fix |
|---|---|---|
| ERR:MEMORY when running a program or graphing | RAM FREE is nearly zero | Archive or delete large programs and pictures; delete leftover lists |
| Can't receive a file or install an app | ARC FREE too low | Delete apps you never use (2: Mem Management/Delete… → Apps) |
| Everything is slow or glitchy after cleanup | Leftover junk in RAM | Archive what you care about, then reset All RAM — steps in /guides/reset-ti84/ |
Work from biggest to smallest: the Mem Management screen shows each item's size, so sort out the few large items first instead of hunting tiny variables. And remember that deleting a list a stat plot or formula still references will trigger ERR:UNDEFINED later — see /error-fixes/err-undefined/ if that happens.
Clearing memory for an exam
First, the good news: the SAT and ACT do not require you to clear your TI-84. You can walk in with every program intact. It's individual teachers and some school or state tests that ask for a "cleared" calculator, and they usually mean one of two things:
A RAM reset. Press 2nd + (MEM), choose 7: Reset, then 1: All RAM, then 2: Reset. Archive your programs first (asterisk trick above) and they'll survive. If a proctor checks, they typically press PRGM and look for an empty list — archived programs still show there, so ask your teacher whether archived items are allowed before relying on this.
Press-to-Test mode. This is TI's built-in exam mode: with the calculator off, hold the ◀ and ▶ arrow keys and press ON. A RESET OPTIONS screen appears; press ZOOM to select OK. Test mode temporarily disables your programs and apps without deleting them — press PRGM or APPS to confirm they're blocked. Getting out of test mode requires a second device: link two TI-84 Plus CE calculators with a USB unit-to-unit cable and transfer any file, or connect to a computer and use TI Connect CE (Actions → Quit Exam Mode). If TI Connect CE won't see your calculator, see /error-fixes/ti-connect-ce/. Don't enter test mode the night before an exam "to practice" unless you have a way to exit it.
One more space-related tip: if ARC FREE seems permanently cramped, updating to the latest OS with TI Connect CE is worth doing anyway for bug fixes — walkthrough at /guides/update-os-ti84/.
Practice right now
Want to try the memory menu without risking your own files? Open the free online TI-84 calculator — a full TI-84 Plus CE in your browser — press 2nd +, choose 2: Mem Management/Delete…, and explore. Check RAM FREE, archive something, delete something. Two minutes of practice there and the real cleanup before your next test will be automatic.