E
Energy Star Computers Programme
An energy conservation programme launched by the US Environmental Protection Agency (EPA) with the
primary aim of promoting the manufacture and marketing of energy-efficient office automation equipment.
Companies joining this programme must be willing to commit themselves to manufacturing one or more
products capable of going into a low -power state (< 30 W) either after a period of inactivity or after a
predetermined time selected by the user.
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L
LCD Liquid Crystal Display
An alphanumeric display using the unique properties of liquid crystal to form characters. The latest flat-panel
displays comprise a matrix of hundreds or thousands of individual LCD cells that generate text and colorful
graphics on a screen. They consume little power though they do require external lighting to make them
legible to the user.
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U
USB or Universal Serial Bus
A smart plug for PC peripherals.
USB automatically determines resources (like driver software and bus
bandwidth) required by peripherals. USB makes necessary resources available without user intervention.
USB eliminates "case angst" -- the fear of removing the computer case to install add-on peripherals.
And USB also eliminates adjustment of complicated IRQ settings when installing new 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 arrive on
the market every day. With USB, up to 127 devices can run simultaneously on a computer.
●
USB permits "hot plug-in." There's no need to shut down, plug in, reboot and run set-up to install
peripherals. And no need to go through the reverse process to unplug a device.
●
In short, USB transforms today's "Plug-and-Pray" into true Plug-and-Play!
Hub
Glossary
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