Acer 330 - Manual (Page 13)

Chapter 1 13
Keyboard
The keyboard has full-sized keys and an embedded keypad, separate cursor
keys, two Windows keys and twelve function keys.
Special Keys
Lock Keys
The keyboard has three lock keys which you can toggle on and off.
Lock Key Description
Caps Lock When Caps Lock is on, all alphabetic characters typed are in
uppercase.
Num Lock
(Fn-F11) When Num Lock is on, the embedded keypad is in numeric mode.
The keys function as a calculator (complete with the arithmetic
operators +, -, *, and /). Use this mode when you need to do a lot
of numeric data entry. A better solution would be to connect an
external keypad.
Scroll Lock
(Fn-F12) When Scroll Lock is on, the screen moves one line up or down
when you press the up or down arrow keys respectively. Scroll
Lock does not work with some applications.