TI-89 Titanium

How do I make the screen brighter on a TI-89?

Press and hold the shift for the green ( the key with the diamond shape on it) ; then tap the minus sign to decrease the contrast or the plus sign to increase it.

During the summer when I’m not in school, should I remove the AAA batteries?

No, leave them in. When you remove the AAA batteries, the power for the RAM is supplied by the small circular battery (SR44SW or 303.) If you leave the AAA batteries out too long, the circular battery will be discharged and you will lose any programs that you have in RAM.

Why will I loose my programs if I remove all batteries.

Well, I’m not exactly sure why you’d want to remove all of the batteries, but if you do, you’ll lose anything that is stored in RAM. Programs and applications that have been stored in flash ROM, archived programs, will not be lost. But any un-archived programs will be lost since they are stored in volatile memory. It’s just like when you turn off your computer, you lose anything that hasn’t been stored on a hard drive.

How do I reset my TI-89 Titanium?

To reset the calculator, you can press and hold the “2nd” button, then press and release the “left arrow” key, “right arrow” key, and finally “on” key. This will perform a soft reset. If you want to perform a hard reset, remove one of the AAA batteries, hold down the “del” key, reinsert the battery, and then release the “del” key.

What is the warranty period for graphing calculators?

All the graphing calculators comes with 3 years of warranty.