Dell External OEMR 2850, User Manual

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Glossary
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graphics mode
A video mode that can be defined as x horizontal by y vertical pixels by z colors.
GUI
Acronym for graphical user interface.
GUID
Abbreviation for Globally Unique Identifier, which is a random number used in
software applications. Each generated GUID is supposed to be unique.
HAPI
Acronym for Hardware Abstraction Programming Interface, which is the lowest
layer that is installed on the operating system by the Instrumentation Service.
This layer is re-used by Dell Update Packages and firmware tools, and flash utilities
to access the hardware through a reusable pipe.
h
Abbreviation for hexadecimal. A base-16 numbering system, often used in
programming to identify addresses in the system's RAM and I/O memory
addresses for devices. The sequence of decimal numbers from 0 through 16, for
example, is expressed in hexadecimal notation as: 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, A, B,
C, D, E, F, 10. In text, hexadecimal numbers are often followed by h.
HBA
Abbreviation for host bus adapter. A PCI adapter card that resides in the system
whose only function is to convert data commands from PCI-bus format to storage
interconnect format (examples: SCSI, Fibre Channel) and communicate directly
with hard drives, tape drives, CD drives, or other storage devices.
HMA
Abbreviation for high memory area. The first 64 KB of extended memory above
1 MB. A memory manager that conforms to the XMS can make the HMA a direct
extension of conventional memory. Also see XMM.
host adapter
A host adapter implements communication between the system's bus and the
controller for a peripheral device. (hard drive controller subsystems include
integrated host adapter circuitry.) To add a SCSI expansion bus to your system,
you must install or connect the appropriate host adapter.