Dell Inspiron 1428 (Late 2009) User Manual
Page 4
Refresh rate
60 Hz
Operating angle
0° (closed) to 135°
Horizontal viewing angle
±40° (LED) minimum
Vertical viewing angle
+15°/-30° (LED) minimum
Pixel pitch
0.1905 x 0.189 mm
Controls
brightness can be controlled through
keyboard shortcuts (see the Dell
Technology Guide for more information)
Keyboard
Number of keys
87
Layout
QWERTY/AZERTY/Kanji
Touchpad
X/Y position resolution (graphics table
mode)
240 cpi
Width
79.7 mm (3.13 inches) sensor-active area
Height
47.7 mm (1.87 inches) rectangle
Battery
Type
6-cell “smart” lithium ion
Dimensions:
Depth
58.23 mm (2.30 inches)
Height
21.5 mm (0.8 inches)
Width
140.6 mm (5. 54 inches)
Weight
0.41 kg (0.90 lb)
Voltage
11.1 VDC
Charge time when the computer is
turned off (approximate)
4 hours
Life span (approximate)
300 discharge/charge cycles
Display
(continued)
ManU MLK2 Comprehensive Specs.fm Page 12 Thursday, March 7, 2013 1:44 PM