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Keys with alternate characters
There are other keys on your keyboard with alternate characters. The symbols that are shown at the bottom of these keys
are the main characters that are displayed when the key is pressed; the symbols that are shown at the top of these keys are
displayed when the key is pressed with the shift key. For example, if you press 2, 2 is displayed; if you press Shift and 2, @ is
displayed.
Camera
The following table lists the camera specifications of your Precision 3581.
Table 17. Camera specifications
Description
Number of cameras
Camera type
Camera location
Camera sensor type
Camera resolution:
Still image
Video
Infrared camera resolution:
Still image
Video
Diagonal viewing angle:
Camera
Infrared camera
Touchpad
The following table lists the touchpad specifications of your Precision 3581.
Table 18. Touchpad specifications
Description
Touchpad resolution:
Touchpad dimensions:
Horizontal
Vertical
Touchpad gestures
24
Specifications of Precision 3581
Values
One
● FHD RGB camera
● FHD RGB + IR camera
● FHD RGB+IR camera with Ambient Light Sensor, Express
Sign-In with Presence Detection and Intelligent Privacy
Front camera
CMOS sensor technology
2.07 megapixels
1920 x 1080 (FHD) at 30 fps
0.23 megapixels
640 x 360 at 30 fps
80 degrees
86.6 degrees
Values
>300 DPI
115 mm
67 mm
For more information about touchpad gestures available on:
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