Delete a program by going to the PRGM menu, selecting the program name, and pressing DEL

To remove a program from your TI-84, press the PRGM button on the keypad. Use the arrow keys to highlight the program you want to delete, then press DEL. The calculator will ask you to confirm — press Y for yes. The program is then gone from your calculator's memory.

This process works the same way whether you wrote the program yourself or downloaded it from another source. Once deleted, the program cannot be recovered unless you have a backup copy saved elsewhere.

Key Takeaways

  • Press PRGM, use arrow keys to find your program, and press DEL to remove it permanently.
  • The calculator asks you to confirm the deletion by pressing Y — this prevents accidental removal.
  • Deleting a program frees up memory space on your calculator for new programs or data.
  • If you delete a program by mistake and have no backup, you will need to rewrite it or download it again.

Understanding the PRGM menu structure

The PRGM button opens a menu with three tabs: EXEC, EDIT, and NEW. When you first press PRGM, you land on the EXEC tab, which shows all programs currently stored on your calculator. This is where you go to delete a program.

The EDIT tab lets you open and change a program's code. The NEW tab starts a blank program. For deletion, stay on the EXEC tab — that is where the list of your programs lives.

Step-by-step deletion process

Step 1: Press the PRGM button on your calculator. The EXEC tab should already be selected (it is the default).

Step 2: Use the down arrow key to scroll through the list of programs until the one you want to delete is highlighted. Program names appear in the order they were created or downloaded.

Step 3: Press the DEL key (which shares a button with the minus sign). The calculator displays "Delete [program name]?" to confirm you really want to remove it.

Step 4: Press Y to confirm deletion, or press N to cancel and keep the program. If you press Y, the program disappears immediately and you return to the program list.

What happens to your calculator's memory

Every program takes up space in your calculator's RAM (random access memory). When you delete a program, that space becomes available again. If your calculator is running slowly or you cannot download new programs because memory is full, deleting unused programs can help.

You can check how much free memory you have by pressing 2ND, then + (which is the MEM button), then selecting 1: Check RAM. This shows you the total memory and how much is in use. Deleting large programs — especially games or graphing utilities — can free up several kilobytes.

Recovering a deleted program

Once you delete a program, the TI-84 does not store it in a trash folder or recovery area. The deletion is permanent. If you need the program again, you have two options: rewrite it from scratch, or download it again from the original source.

To avoid losing programs you might need later, consider backing them up before deletion. You can connect your calculator to a computer using a USB cable and transfer programs to your computer using TI Connect CE software (free from Texas Instruments). This way, if you delete something by mistake, you can copy it back to your calculator.

Common mistakes when deleting programs

The most common error is accidentally pressing DEL when you meant to press ENTER to run the program. Always read the confirmation message carefully before pressing Y. If you press Y by mistake, you cannot undo it — the program is deleted immediately.

Another mistake is deleting a program you did not write and cannot find again. Before you delete any program, especially one someone else created for you, make sure you have a copy saved elsewhere or that you can download it again. Some programs are shared only once and are hard to track down a second time.

Frequently Asked Questions

Can I delete multiple programs at once?

No. The TI-84 deletes one program at a time. You must go through the PRGM menu, select each program, and press DEL individually. If you have many programs to remove, this takes a few minutes, but there is no faster method built into the calculator.

What if I delete a program by accident?

The program is gone permanently from your calculator. If you have a backup on your computer or another calculator, you can transfer it back. Otherwise, you will need to rewrite the program or find someone who has a copy and can send it to you.

Does deleting a program affect my other data or settings?

No. Deleting a program only removes that one program. Your other programs, saved lists, equations, and calculator settings stay exactly as they were. Only the program you selected for deletion is removed.

How much memory does a typical program use?

Program size varies widely. A simple program might use 500 bytes, while a complex game or graphing tool can use 10,000 bytes or more. You can see the size of each program by highlighting it in the PRGM menu and looking at the number shown on the right side of the screen.

Can I delete programs that came with the calculator?

The TI-84 does not come with built-in programs in the PRGM menu — it comes with built-in functions and apps. If you see a program in your PRGM list, someone created it or downloaded it, so yes, you can delete it. Apps (like Cabri Jr. or Inequality Graphing) are different and are deleted through a separate menu.