Texas Instruments TI-89 Calculator "15 reseting" Questions

...MS-80TV desk calculator? Try pressing an operation key twice. For example to multiply any entry by 15, you would enter 15, press the multiplication key twice. Now to calculate the products of you ...

Cannot get the "fix" to go off. On the TI-15 I am having a problem getting the Fix function to go away. I inherited these calculators from a predecessor and they lost the manual so I'm trying to ...

Can't reset I'm tutoring a student. Noticed it gave the answer 90 divided by 2 = 40. Can seem to clear and rest this Hello, You reset it by pressing simultaneously and holding the two yellow keys on ...

hi I use a casio FR-620TER calculator, how can I change the VAT calculation function to 15%.? I pressed the reset button on the back which seems now to to have reset the VAT calculation to 5% and I ...

...the VAT calculation function How can I change the VAT calculation function (TAX- and TAX+) to 15%? I have pressed the reset button on the back but it seems to have reset the calculation to 5% ...

15 I am positive that i am entering the equations in the right way. I have the answers to the problems so i know that the answers its giving me are off by a small amount. The calculator is also reset,

...up. just like date, press the hour then the decimal then the minute. (Example if the time is 10:15 you enter 10 . 15) Press the Time/Date Key and the time is set. This link is the manual: ...

...removing the battery press all the keys to discharge any charge and replace battery after about 15

...then remove the small round silver battery (you may need to remove the plastic backing) for 15 seconds. If done properly, the device should be forced to hard-reset. If this does not solve the ...

I have a polaris 31 day grandfather clock that is chimming 1 hour and 15 minutes to soon. (Example: real time is 8:45 and it is chilling lime it is 10:00 o'clock. How do I fix this? Thank you. Hi i ...