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Why wont your TI 84 plus silver edition calculator turn on?
Perhaps you have to change the battery. It is also possible that the calculator is damaged.
How can you power off your Orpat calculator?
To power off an Orpat calculator, you typically need to locate the power button, which is usually labeled as "ON/OFF" or with a similar symbol. Press and hold this button for a few seconds until the display turns off or the calculator shuts down. Some Orpat calculators may also have an automatic power-off feature after a period of inactivity to conserve battery life.
How many batteries does the Texas Instruments TI-84 Plus Silver Edition Graphing Calculator?
The TI 84 Plus graphing calculator takes 4 AAA batteries as well as a back up button cell battery to ensure that just because the batteries die does not mean the learning or storing has to.
Texas Instruments does the TI-1766 plus have a backup battery?
"The TI-1766 had solar cells that eliminated the need for batteries and powered the calculator indoors and out." See http://www.thocp.net/hardware/ti_calculators.htm
Where can you buy a replacement battery for your HP 33E Calculator?
Standard AA batteries work fine. Use 2 in series. Get the polarity right, positive pole nearest the center of the calculator, negative pole nearest the top. Put in a small piece of aluminum shim or foil on the plastic side to link them together. I've been doing this for 20 years and still use my 33E every day. One tough calculator.
