Manual

tpi
Abbreviation for tracks per inch.
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UL
Abbreviation for Underwriters Laboratories.
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UMB
Abbreviation for upper memory blocks.
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upper memory area
The384KBofRAMlocatedbetween640KBand1MB.IfthesystemhasanIntel386orhighermicroprocessor,autilitycalledamemory manager can create
UMBs in the upper memory area, in which you can load device drivers and memory-resident programs.
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UPS
Abbreviation for uninterruptible power supply. A battery-powered unit that automatically supplies power to your system in the event of an electrical failure.
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USB
Abbreviation for Universal Serial Bus. A USB connector provides a single connection point for multiple USB-compliant devices, such as mice, keyboards, printers,
and system speakers. USB devices can also be connected and disconnected while the system is running.
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utility
A program used to manage system resources—memory, disk drives, or printers, for example.
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UTP
Abbreviation for unshielded twisted pair.
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V
Abbreviation for volt(s).
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VAC
Abbreviation for volt(s) alternating current.
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VCCI
Abbreviation for Voluntary Control Council for Interference.
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VCR
Abbreviation for video cassette recorder.
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VDC
Abbreviation for volt(s) direct current.
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VGA
Abbreviation for video graphics array. VGA and SVGA are video standards for video adapters with greater resolution and color display capabilities than