Sony PCG-GRV680P 手册

16 

Home key 

17 

Page Up key 

18 

Page Down key 

19 

End key 

Numeric keypad 

Contains the keys found on a typical calculator. Use the numeric keypad area to type numbers or to

perform mathematical calculations, such as addition and subtraction. Numbers appear on the front beveled edge of the
numeric keys. Press the Num Lock key to activate the numeric keypad. (When you do so, the Num Lock indicator light turns
on.) Press the Num Lock key again to deactivate the numeric keypad. 

Arrow keys 

The Left, Right, Up, and Down arrow keys move the pointer on the screen. They also function as the Home,

End, Page Up, and Page Down keys, respectively, when the Fn key is pressed. 

Correction keys 

The Insert, Back Space, and Delete keys enable you to make corrections to keystrokes. 

Function keys  The 12 function keys along the top of the keyboard are used to perform designated tasks. For example, in
many programs, F1 is the Help key. The task associated with each function key may vary from one program to the next. 

Escape key 

The Esc (Escape) key is used to cancel commands. 

Print Screen key 

The Print Screen key takes an electronic snapshot of the screen and moves it to the Clipboard. You

can then paste the screen shot into a document and print it. 

Operator keys
(Ctrl, Alt, Shift keys) 

Several keys are always used with at least one other key: Ctrl, Alt, and Shift. When held down with

another key, the Ctrl (Control) and Alt (Alternate) keys offer another way to give commands. For example, in many
programs, instead of choosing the Save command from a menu, you can hold down Ctrl and press S (referred to as Ctrl+S