I think you mean the tilde? If you mean this one: ~
Function Keys (hence the "F" in front of the numbers 1 through 12.)
If you mean the "curlycue" thing to the left of numeral 1, it is called a "tilde."
The name for the keyboard symbol, which appears as ? is the question mark. A person should place one of these symbols at the end of every question they type.
It is known as an asterisk. (*)
The keys with the numbers 0-9 written on them !
Keys - as in a board of keys = keyboard
they are known as the function keys.
Keyboard shortcut
There are two enter keys on a standard keyboard and just one on a lap top, tablet etc.
Keystroke.
These keys are often referred to as the home row on the keyboard.
They are called the 'arrow keys'.
It's called the qwerty (after the letter arrangement at the start of the top row of the alphabet keys, under the numerical keys).
The keyboard or the manual.
ENHANCED
enhanced