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- X
- Electronics: The symbol for reactance.
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- X-10
- Plug 'n Power: A communications language that allows compatible devices to communicate with each other using the existing electrical wiring of a building.
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- X.25
- Telephony: A communications protocol for packet-switched data.
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- X-band
- Radar Detectors: The frequency band between 5.2 GHz to 10.9 GHz.
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- XGA
- Acronym: eXtended Graphics Array
- Digital Video: An image resolution of 1024 x 768 pixels.
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- XLR
- Acronym: XLR is not an acronym. It is a generic term for a three-pin balanced microphone connector, the design of which is based on ITT Cannon's 3-pin circular connectors (that had the prefix of "XLR-").
- Audio: A connector type used in balanced audio hookups to connect microphones to PA amplifiers, mixers or extension cords. Click here for illustration.
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- Xmag
- Audio: The maximum linear travel of the cone in one direction, based on the magnetic limitations of the motor.
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- Xsus
- Audio: The maximum linear travel of the cone in one direction, based on the mechanical limitations of the suspension.
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- Xmax
- Audio: The maximum linear travel of the cone in one direction, derived as the shorter of the Xmag and Xsus parameters.
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- XNOR
- Acronym: eXclusive-NOR
- Electronics: An XOR logic gate followed by a NOT gate. It outputs "False" when only one of the inputs is "True"; otherwise, the output is "True".
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- XOR
- Acronym: eXclusive-OR
- Electronics: A logic gate that outputs "True" when only one of the inputs are "True"; if both inputs are "True" or both inputs are "False", the output is "False".
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