Fujitsu Lifebook L470, Manual

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A p p e n d i c e s
176
Default Value
A preprogrammed value to be used if you fail to
set your own.
DIMM
Abreviation for dual-in-line memory module.
Disk
A spinning platter of magnetic data storage
media. If the platter is very stiff it is a hard
drive, if it is highly flexible it is a floppy disk,
if it is a floppy disk in a hard housing with
a shutter it is commonly called a diskette.
Disk Drive
The hardware which spins the disk and has the
heads and control circuitry for reading and
writing the data on the disk.
Diskette
A floppy disk in a hard housing with a shutter.
DMA
Abreviation for Direct Memory Access. Special
circuitry for memory to memory transfers of
data which do not require CPU action.
Command
An instruction which you give your operating
system. Example: run a particular application
or format a floppy disk.
Configuration
The combination of hardware and software that
makes up your system and how it is allocated
for use.
CRT
Abreviation for Cathode Ray Tube. A display
device which uses a beam of electronic particles
striking a luminescent screen. It produces a
visual image by varying the position and inten-
sity of the beam.
Data
The information a system stores and processes.
DC
Abreviation for direct current. A voltage or
current that does not fluctuate periodically
with time.
CHS Translation
Abreviation for Cylinder, head and sector trans-
lation. Conversion of hard drive access address-
ing to the cylinder, head and sector form. The
terminology is historical left from the days
when data was stored on a series of cylindrical
drums. The head designates the reading device,
similar to the head on a cassette recorder only
mounted on a movable arm. Another address-
ing method is LBA.
CMOS RAM
Abreviation for Complementary Metal Oxide
Semiconductor Random Access Memory. This is
a technology for manufacturing random access
memory which requires very low levels of power
to operate.
COM Port
Abbreviation for communication port.
This is your serial interface connection.