Why does every calculator and mobile have a dot at button "5" ?

Answer so you can feel center of phone, and know where the 5 is in dark lighting or if you are blind.

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What does GT button in D-20L CASIO calculator do?

This is a 'Grand Total' key. I found the following on the Casio website under General Calculator FAQ:"Whenever the '=' Key has been pressed, the result will be stored into the Grand Total Memory. T... Read More »

Every button except the center home button on my iphone 3g doesn't work what should i do to either fix it or get a new one free?

Adobe Flash is not currently supported on the iPhone, so it is not currently possible to download the Adobe Flash player to the iPhone.

You have a sentry really big universal remote model no rmc-10 you have a haier tv and you program with the code for that tv but when push a button it does not response to the right button example when?

How to Use the Log Button on a Calculator?

The log button is a button found on scientific and graphing calculators. Log is short for "logarithm." On calculators, the log button finds the base 10 logarithm of any given number. This means you... Read More »