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Glossary |
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| U |
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Unbalanced audio
- An unbalanced (single ended)
interface uses only two conductors to carry the
signal from one device to another, one conductor
carries the signal and the other is the grounded
return. In consumer audio systems this usually
consists of a cable with a center conductor and
a shield terminated in an RCA Phono plug. @teqgear |
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UPS -
Uninterruptible Power Supply. A power supply
that continues to provide voltage for a limited
time after the main power is fails. @teqgear |
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URL -
Uniform Resource Locator. An Internet address
usually consisting of the access protocol (http)
, the domain name (www.teqgear.com), and
optionally the path to a file or resource
residing on that server. @teqgear |
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USB -
Universal Serial Bus. A “plug-and-play”
interface, it allows a device to be added
without an adapter card and without rebooting
the computer. The number of devices being
designed for USB continues to grow, from
keyboards, mice, and printers to scanners,
digital cameras, and ZIP drives. @teqgear |
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UXGA - Ultra
Extended Graphic Array. Ultra XGA) A screen
resolution of 1600x1200 pixels. total display
resolution of 1,920,000 individual pixels that
are used to compose the image delivered by a
projector. Has an aspect ratio of 4:3. @teqgear
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V |
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VCR - Video
Cassette Recorder: An electronic device for
recording and playing video images and sound on
a videocassette. @teqgear |
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VGA - Video
Graphics Array. The display standard for the PC.
The video outputs to a 15-pin HD connector. VGA
sigal is actually digital, but with lower
resolution. It has a pixel by line resolution of
640 x 480 with a color palette of 16 bits and
256,000 colors at an aspect ratio of 4:3. @teqgear |
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VHF - Very
High Frequency. The range of electromagnetic
frequencies from 30MHz to 300MHz. Television
broadcast range between 30 and 300 MHz, on
channels 2 through 13. The FM radio band is
between 88 to 108 MHz, on channels 6 and 7 .
@teqgear
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Video - The
visual portion of a televised broadcast. The
term is also widely used to refer to the display
system of a computer. @teqgear |
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Video amplifier
- The function of a video amplifier is
to amplify a signal containing high-frequency
components without introducing distortion. It is
a low-pass amplifier having a bandwidth in the
range from 2 to 100 MHz. @teqgear |
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Video connector
- The connector on the video card or
computer's graphics output that is connected to
the video input on the local monitor. @teqgear |
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Video distribution
amplifier - An amplifier for
strengthening the video signal so that it can be
supplied to a number of video monitors at the
same time and at the orignal quality. @teqgear |
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Video gain -
The amplitude of a video signal. @teqgear |
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Video
standards - "NTSC", "PAL", and "SECAM."
@teqgear
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W |
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WAN - Wide
Area Network. A wide area network or WAN is a
computer network covering a wide geographical
area, involving a vast array of computers. @teqgear |
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Watt - A
unit of electrical power used to indicate the
rate of energy produced or consumed by an
electrical device. @teqgear |
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WLAN -
Wireless Local Area Network. A form of local
area network that uses radio waves to transmit
data between nodes rather than through cable.
Mobile devices, such as laptop computers and
personal digital assistants, have helped spawn
the "plugless" connection to WLANs. The IEEE
802.11 standard specifies the technologies for
wireless LANs. @teqgear |
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WSXGA - Wide
Super XGA. A wide screen resolution of 1680 x
1050 pixels at an aspect ratio of 16:10. @teqgear |
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WXGA - Wide
XGA. Wide screen resolutions of 1366x768,
1280x800, 1280x768 pixels at the aspect ratio of
16:9, 16:10, 5:3 respectively. @teqgear
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X |
| XGA - EXtended Graphics
Array. A screen resolution of 1024x768 pixels at
an aspect ratio of 4:3. @teqgear
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