Lcd panel technology – Philips 220C1SW-00 User Manual
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FAQs (Frequently Asked Questions)
settings -- for add-on peripherals. USB does away with "port gridlock." Without USB,
PCs are normally limited to one printer, two Com port devices (usually a mouse and
modem), one Enhanced Parallel Port add-on (scanner or video camera, for example),
and a joystick. More and more peripherals for multimedia computers come on the
market every day. With USB, up to 127 devices can run simultaneously on one
computer. USB permits "hot plug-in." No need to shut down, plug in, reboot and run
set up to install peripherals. No need to go through the reverse process to unplug a
device. Bottom line: USB transforms today's "Plug-and-Pray" into true Plug-and-Play!
Please refer to glossary for more information about USB.
Q:
What is a USB hub ?
A:
A USB hub provides additional connections to the Universal Serial Bus. A hub's
upstream port connects a hub to the host, usually a PC. Multiple downstream ports in
a hub allows connection to another hub or device, such as a USB keyboard, camera
or printer.
LCD Panel Technology
Q:
What is a Liquid Crystal Display?
A:
A Liquid Crystal Display (LCD) is an optical device that is commonly used to
display ASCII characters and images on digital items such as watches, calculators,
portable game consoles, etc. LCD is the technology used for displays in notebooks
and other small computers. Like light-emitting diode and gas-plasma technologies,
LCD allows displays to be much thinner than cathode ray tube (CRT) technology.
LCD consumes much less power than LED and gas-displays because it works on the
principle of blocking light rather than emitting it.
Q:
What differentiates passive matrix LCDs from active matrix LCDs?
A:
An LCD is made with either a passive matrix or an active matrix display grid. An
active matrix has a transistor located at each pixel intersection, requiring less current
to control the luminance of a pixel. For this reason, the current in an active matrix
display can be switched on and off more frequently, improving the screen refresh time
(your mouse pointer will appear to move more smoothly across the screen, for
example). The passive matrix LCD has a grid of conductors with pixels located at
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