Philips 190XL User Manual page 91

Glossary
Usually made from amorphous silicon (a-Si) and used as a switch to a charge storage device
located below each sub-pixel on an active matrix LCD.
U
USB or Universal Serial Bus
The universal serial bus or USB is a standard protocol for linking PCs and peripherals. Because it
delivers high speed at a low cost, USB has become the most popular method for connecting
peripheral devices to a computer. A USB 2.0 port located on a monitor directly in the user's line of
sight provides easy, high-speed connectivity for USB devices at a convenient location.
V
Vertical refresh rate
Expressed in Hz, it is the number of frames (complete pictures) written to the screen every second.
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