Apple 17-INCH manual Flat-Panel Display, Picture size, Black margins

CHAPTER 3

Devices and Ports

Key name	Alternate function
Command	Windows key
Enter	Menu key (for contextual menus)
Left arrow	Home
Up arrow	Page up
Down arrow	Page down
Right arrow	End

Flat-Panel Display

The PowerBook G4 17-inch computer has a built-in, wide-screen, 100 dpi, color flat-panel display with a resolution of 1440 by 900 pixels and measures 17 inches diagonally.

The display is backlit by a cold cathode fluorescent lamp (CCFL). The display uses TFT (thin-film transistor) technology for high contrast and fast response.

In addition to its native resolution (1440 by 900) the display also supports several non-native resolutions, as shown in Table 3-12. The graphics controller IC includes a scaling function that expands displays with those smaller resolutions to fill the screen.

The display’s native resolution, 1440 by 900, has an aspect ratio of 16:10. When selecting a picture resolution with an aspect ration of 4:3, the user can choose to have it displayed with square pixels and black margins on the sides, or with stretched pixels that fill the display from side to side. These options are shown in Table 3-12(page 44).

Table 3-12Picture sizes on the flat-panel display

Picture size	Display area used	Black margins	Shape of pixels
800 by 600	1200 by 900	yes	square
800 by 600	1440 by 900	no	stretched
1024 by 640	1440 by 900	no	square
1024 by 768	1200 by 900	yes	square
1024 by 768	1440 by 900	no	stretched
1152 by 720	1440 by 900	no	square
1440 by 900	1440 by 900	no	square (native)

44Flat-Panel Display

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