How to reset TI-84 calculator?

Resetting a TI-84 calculator can be done in a few different ways, depending on what you mean by "reset." Here are a few common methods:

1. Soft Reset: This is like restarting the calculator without erasing any data.
   • Press the CLEAR button, then press 2: RESET to perform a soft reset.

2. Clear Apps: This will remove all applications (but not the operating system) from the calculator.
   • Press 2nd + MEM + CLEAR to clear the applications.

3. Clear All Memory: This will clear all the RAM, including the applications, pictures, and any other data stored in the calculator.
   • Press 2nd + QUIT to clear all memory. Be careful with this command, as it will erase everything.

4. Archieve/Unarchieve: This will archive or unarchive all applications, which is a way to free up space.
   • Press 2nd + MEM + 5 to archive all apps.
   • Press 2nd + MEM + 6 to unarchive all apps.

5. Factory Reset: This will restore the calculator to its original factory settings, erasing all data and applications.

   • Turn off the calculator.
   • Press and hold the following keys: CLEAR, UP (the up arrow), GRAPH (the graph button), and ON (the power button).
   • While still holding these keys, release and press CLEAR (the clear button) to confirm the reset.
   • Release all keys after a few seconds to complete the reset.

6. OS Update or Reinstall: If the calculator is not functioning properly, you might need to update or reinstall the operating system.

   • You can do this by connecting the calculator to a computer and using the TI Connect software or similar.

Remember to back up any important data before performing a reset, as some of these actions can erase your data. If you're unsure about any of the steps, consult the user manual or the Texas Instruments website for more detailed instructions.