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C
cache
CDE
CD-ROM
CD-RW
CODEC
D
DDC2
DDR-1 SDRAM
default
DIMM
DMA
DRAM
drive rails
D-TLB
DVD-dual
Glossary-2
Sun Ultra 45 and Ultra 25 Workstations Service and Diagnostics Manual • May 2006
A smaller, faster accessible set of memory used to speed up operations of
CPUs, storage, and networking components. Typically found within the
component it serves.
Common Desktop Environment.
Compact disc read-only memory. A CD-ROM drive reads data recorded on the
CD-ROM optical disc.
Rewritable compact disc.
(1) Coder/decoder. A CODEC uses analog-to-digital conversion and digital-to-
analog conversion in the same chip.
(2) Compression/decompression. An algorithm or computer program for
reducing byte consumption in large files and programs.
Display data channel version 2. DDC2 is the I
with the monitor. This interface is the same for both the HD15 and DVI-I
connectors.
Double data rate synchronous dynamic random access memory.
A preset value that is assumed to be correct unless changed by the user.
Dual inline memory module. A printed circuit card that contains dynamic
random access memory chips. See Registered DIMM.
Direct memory access. The transfer of data directly into memory without
supervision of the processor. The data is passed on the bus directly between
the memory and another device.
Dynamic random-access memory. A read/write dynamic memory in which the
data can be read or written in approximately the same amount of time for any
memory location.
Mounting hardware used to secure hard drives and other peripherals inside
the workstation.
Data translation look-aside buffer.
Optical drive that can read and write DVDs and CDs.
2
C interface used to communicate
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