No.
The screen
The display
Yes, you can use a calculator on the GRE exam, but it is a basic on-screen calculator provided by the test.
No, because it doesn't have a screen.
On a calculator screen it is eight(8) digits.
Yes, you are provided with an on-screen calculator during the Quantitative Reasoning sections of the GRE exam.
When it's showing numbers on the screen...
The TI-83 has a very good screen and excellent graphics.
A graphing calculator is a calculator with the capability of graphing an equation on a built-in coordinate grid on the screen. They usually have a simple LCD grid screen, and by typing in the equation (e.g., 5x+3), the screen refreshes to display a graph of the equation in a set window range.
on the touch screen after you receive the app.
Display screen
The little "D" on your calculator screen typically indicates that the calculator is in "Decimal" mode. To remove it, you can usually change the mode settings. Look for a button labeled "Mode" or "Settings," then select the option to switch to a different display mode, such as "Fraction" or "Standard." If you're unsure, consult your calculator's manual for specific instructions.