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Glossary |
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| I |
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I/O -
Input/Output. Refers to the flow of information
signals (in or out) with respective device.
Every transfer is an output from one device and
an input into another. @teqgear |
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IEEE -
Institute of Electrical and Electronics
Engineers, New York, www.ieee.org. A membership
organization that includes engineers, scientists
and students in electronics and allied fields.
@teqgear
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IEEE 802.11
- A family of IEEE standards for wireless LANs .
The 802.11 standard is more widely known as
"Wi-Fi". IEEE 802.11 applies to wireless LANs
and provides 1 or 2 Mbps transmission in the 2.4
GHz band using either frequency hopping spread
spectrum (FHSS) or direct sequence spread
spectrum (DSSS). @teqgear |
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IEEE 802.11a
- The 802.11a standard uses the same core
protocol as the original standard, operates in 5
GHz band, and uses a 52-subcarrier orthogonal
frequency-division multiplexing (OFDM) with a
maximum raw data rate of 54 Mbit/s. @teqgear |
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IEEE 802.11b
- Often called Wi-Fi, 802.11b is backward
compatible with 802.11. IEEE 802.11b has a data
transmission rate of 11 Mbps, sufficient for
most non-motion data transmission applications.
@teqgear
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IEEE 802.11g
- Applies to wireless LANs and provides 54 Mbps
in the 2.4 GHz band (backwards compatible with
b). @teqgear
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Image -
Visual counterpart or likeness of an object, a
person, or a scene. @teqgear |
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Impedance
-The opposition to the flow of alternating
current in a circuit. Represented by the letter
"Z" and measured in ohms, impedance is the
combination of resistance, inductance and
capacitance of the circuit. Video termination
impedance is 75 ohms. @teqgear |
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Infrared
(IR) - Relating to the range of
invisible radiation wavelengths from about 750
nanometers, just longer than red in the visible
spectrum, to 1 millimeter, on the border of the
microwave region. @teqgear
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J |
| Jacket - Outer
protective covering of a wire or cable. @teqgear |
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JPEG - Joint
Photographic Experts Group. An ISO/ITU standard
for compressing still images. @teqgear
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K |
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kHz -
Kilohertz, a unit of frequency. One thousand
cycles per second. @teqgear
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L |
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LAN - Local
Area Network. A computer network is two or more
computers that communicate with each other
through some medium. @teqgear |
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LCD - Liquid
Crystal Display. A display technology that uses
liquid crystals that flow like liquid and bend
light. @teqgear
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LED - Light
Emitting Diode. A semiconductor device which
converts electrical energy into electromagnetic
radiation. The wavelength of the emitted
radiation ranges from the near-ultraviolet to
the near-infrared. usually red, green, yellow,
blue, or white in color. Some LEDs can produce
two different colors. @teqgear |
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Level - The
relative intensity of an audio or video source.
@teqgear
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Line driver
- A device that extends the transmission
distance between terminals and computers
connected via networks. @teqgear |
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Line out -
Audio output. @teqgear |
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Login - The
process of gaining access or signing in to a
computer network. @teqgear |
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Lossless -
Methods of compressing files (text, graphic
etc.) without losing data. @teqgear |
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Loudspeaker
- A device that converts electric signals to
audible sound. @teqgear
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