How do you delete programs off of the TI-83?

Answer 1

Turn the calculator on and press 2nd, + (MEM), 2:Delete, 7:Prgm. This shows a list of all programs with the cursor pointed at the first one. Use the up- or down-arrow keys to place the cursor in front of the one you want to delete, then press ENTER. Repeat for all programs that are to be deleted. Turn the calculator on and press 2nd, + (MEM), 2:Delete, 7:Prgm. This shows a list of all programs with the cursor pointed at the first one. Use the up- or down-arrow keys to place the cursor in front of the one you want to delete, then press DEL. The calculator will then ask if you're sure you want to delete, so press 2:Yes. Repeat for all programs that are to be deleted.

found @ http://www.math.tamu.edu/~lynnette.cardenas/del_prog.htm

Answer 2

Any edit you make to a program on a TI-83 plus is immediately saved.

To save a program to a group, which can act like backing it up, press 2ND MEM (about +) and then Gruop... Choose Create New and type a name for your group. Choose what to put into the group (you must choose at least 2 items) and select done. The group will be made. To take the program out of the group, Press 2ND MEM, chose UNGROUP and the top and select the group. Anything in the group will not be erased when the RAM is cleared.

(To delete something such as a group or program, press 2ND MEM, choose the category [Prgm for program, for example], move the arrow to the item you want to delete and press DEL. You will have to delete a group before you can make another one with the same name.)