Dell Latitude C640 - Manual (Page 120)

Operating angle 0° (closed) to 180°
Viewing angles:
Horizontal ±40°
Vertical +10°/–30°
Pixel pitch 0.28 x 0.28 mm (XGA)
0.20 x 0.20 mm (SXGA+)
Power Consumption:
Panel with backlight (typical) 6.5 W (XGA)
7.0 W (SXGA+)
Controls brightness can be controlled
through keyboard shortcuts
Keyboard
Number of keys 87 (U.S. and Canada); 88 (Europe);
91 (Japan)
Key travel 2.7 mm ± 0.3 (0.11 inch ± 0.016
inch)
Key spacing 19.05 mm ± 0.3 mm (0.75 inch ±
0.012 inch)
Layout QWERTY/AZERTY/Kanji
Touch Pad
X/Y position resolution
(graphics table mode)
240 cpi
Size:
Width 64.88 mm (2.55-inch) sensor-active
area
Height 48.88-mm (1.92-inch) rectangle
Track Stick
X/Y position resolution
(graphics table mode)
250 count/sec @ 100 gf
Size protrudes 0.5 mm higher than
surrounding keycaps