Bull ESCALA E250, Использование и обслуживание, Страница: 147 / 162

G-1
Glossary
Glossary
A
A: Ampere.
AC: Alternating Current.
AIX: IBM’s implementation of UNIX operating
system.
ANSI: American National Standards Institute.
Appliance Coupler: A standard IEC 320 male plug
placed on the system rear side.
ASCII: American Standard Code for Information
Interchange.
ASIC: Application Specific Integrated Circuit.
ATM: Asynchronous Transfer Mode. A
cell-switching, connection-oriented technology. In
ATM networks, end stations attach to the network
using dedicated full duplex connections.
AUI: Attachment Unit Interface.
B
bank: See memory bank.
BAT: Block Address Translation register.
BIST: Built In Self Test.
BPP: Bi-directional Parallel Port.
bulkhead: The pass-thru plate for the connection
of the SCSI busses.
BUMP: Bring-Up MicroProcessor. A low power
microprocessor which monitors the system,
especially during the various boot phases before
the operating system is loaded.
C
CD-ROM: Compact Disc Read-Only Memory.
High-capacity read-only memory in the form of an
optically readable compact disc.
chip: Synonym for integrated circuit (IC).
CHRP: Common Hardware Reference Platform.
System model architecture, implemented on
multiple bus systems (PCI, ISA). Standard CHRP
functions are provided to isolate the operating
system from every specific hardware
implementation.
CL:
Cas Latency.
CPU:
Central Processing Unit.
CRC:
Cyclic Redundancy Check.
CTS: Clear To Send register.
D
DAS: Disk Array Subsystem. A RAID disk system,
available in different models.
DC: Direct Current generated by the power supply.
DCD:
Data Carrier Detect register.
DDS:
Digital Data Storage.
device areas:
See media and disk device areas.
device shutter:
The shutter which protects media
and disk device areas. This shutter should be kept
closed during system operations.
DIMM: Dual In-line Memory Module. It is the
smallest component of the system memory. See
also memory bank, riser.
disk cage: A metallic box which hosts three disk
carriers. See also FD3.
disk carrier: A sled used to install hard disk drives
into the system. See also disk cage.
DLL: Divisor Latch LSB register.
DLM: Divisor Latch MSB register.
DOR: Digital Output Register.
DPCI: Dual Port PCI host bridge.
DRAM: Dynamic Random Access Memory.
DSR: Data Set Ready register.
DTR: Data Terminal Ready register.
DUART: Dual Universal Asynchronous Receiver
Transmitter.
E
ECC: Error Correcting Code.
ECMA: European Computer Manufacturers
Association.
EEPROM: Electrically Erasable Programmable
Read-Only Memory. An EPROM that can be
reprogrammed while it is in the system.