How do I get rid of the letter E on my caculator

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Change your search engine. I hate Ask- and Bing.

Change your display resolution. Go into the Control Panel and look for Desktop or Appearance and Personalization. Open the desktop then click the Settings Tab. Adjust the screen resolution. The higher the resolution the smaller the icons the more that will be displayed.

They're indicating that you have nonzero values stored in memories 2 and 3. To get rid of the display indicators, simply store zero into the memories. Press 0 STO 2 0 STO 3.

1. Press the Fn key and while holding it down, press the F8 key momentarily to toggle muting of the speaker. An icon of the speaker appears at the bottom middle of the screen showing muting on or off.
2. After making sure the muting is off (no slash symbol on the speaker icon), press and hold Fn again.
3. With Fn pressed, press the key with the upward triangle and speaker symbol to increase volume which is shown at the bottom middle of the screen by the green lettering & vertical bars Volume ''''''''''''
4. With Fn pressed, press the key with the downward triangle and speaker symbol to decrease volume which is shown at the bottom middle of the screen by the green lettering & vertical bars Volume '''

This problem can only be solved by formatting the mobile completely.
below is link given for formatting the mobile

http://www.fixya.com/support/r5875102-format_nokia_mobile_phones_3110c_2700c

On the back of the calculator, there is a little "reset" hole. Use a pen and press it into that hole for a few seconds, then release. You should now be able to turn on your calculator as if it was brand new from factory without the "p".

You can download the manual from http://www.usa.canon.com/consumer/controller?act=ModelInfoAct&tabact=DownloadDetailTabAct&fcategoryid=346&modelid=15431

Make sure NumLock is OFF.

Hold 2 volume controls down together until the P goes