It means Error. If you try to divide a number by 0 it should give you the E. Also if you try to multiply numbers that will give a larger number than the calculator allows. I believe exponential calculators fix this by giving you a exponential answer.
TE
Sto on the calulator means it will save the number in the memmory then pres m to get it back
Input is when you type with the calculator
I can't say for all calculators, but on my TI calculator, it is the number of digits after the decimal place: type 2.0 enter fix 5 and 2.00000 appears.
Clear Entry. So if you press the wrong number.. you can erase it without deleting your entire calculation.
not a number
"An uppercase letter" or "A capital letter".
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At least one letter/number of the password you choose must be capital: ABCDEFGHIJKLMNOPQRSTUVWXYZ
Sto on the calulator means it will save the number in the memmory then pres m to get it back
Input is when you type with the calculator
I can't say for all calculators, but on my TI calculator, it is the number of digits after the decimal place: type 2.0 enter fix 5 and 2.00000 appears.
Clear Entry. So if you press the wrong number.. you can erase it without deleting your entire calculation.
Letter I is number 1
Memory. It's the button that saves your current number, and when you press MRC, or Memory ReCall, the number is restored, giving you a great way to add two products if you have a basic calculator, or to do otherwise impossible equations that have many separate parts.
The Triangle Symbol is the Classical Greek Capital letter 'D'. and means 'difference'.
Usually the letter n stands for number, and it means some unspecified number.