Special Keys; Lock Keys - Acer Extensa 390 Features Manual

Getting Familiar with your Computer
1.4 Keyboard
The keyboard has full-sized keys that includes an
embedded keypad, separate cursor keys, two
Windows 95 keys and twelve function keys.

1.4.1 Special Keys

Lock Keys

The keyboard has three lock keys which you can
toggle on and off.
Lock Key
Caps
Lock
Fn-
NumLk
Fn-ScrLk
1-8
Description
When Caps Lock is on, all alphabetic characters
typed are in uppercase.
When Num Lock is on, the embedded keypad is
in numeric mode. The keys function as a
calculator (complete with 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.
When Scroll Lock is on, the screen moves one
line up or down when you press
respectively. Scroll lock does not work with
some applications.
or