Fujitsu Lifebook N3410, Руководство пользователя

Страница: 101 / 112

95
G l o s s a r y
Glossary
802.11b
802.11b is a wireless communications architecture that
allows data transfer at up to 11 Mbps. 802.11b operates
at the 2.4 GHz frequency.
802.11g
802.11g is a wireless communications architecture that
allows data transfer at up to 54 Mbps, nearly five times
the speed of the IEEE 802.11b standard. 802.11g is back-
ward-compatible with IEEE 802.11b, and operates at the
same 2.4 GHz frequency.
AC Adapter
A device which converts the AC voltage from a wall
outlet to the DC voltage needed to power your LifeBook
notebook.
ACPI
A power management specification that allows the oper-
ating system to determine the amount of power given to
each connected device.
Active-Matrix Display
A type of technology for making flat-panel displays
which has a transistor or similar device for every pixel
on the screen.
ADSL
Asymmetric Digital Subscriber Line
Technology for transporting high bit-rate services over
ordinary phone lines.
AGP
Accelerated Graphics Port. High-performance, compo-
nent-level interconnect that enhances 3D graphical
display.
APM
Advanced Power Management.
Auto/Airline Adapter
A device which converts the DC voltage from an auto-
mobile cigarette lighter or aircraft DC power outlet to
the DC voltage needed to power your LifeBook note-
book.
BIOS
Basic Input-Output System. A program and set of
default parameters stored in ROM which tests and
operates your LifeBook notebook when you turn it on
until it loads your installed operating system from disk.
Information from the BIOS is transferred to the installed
operating system to provide it with information on
the configuration and status of the hardware.
Bit
An abbreviation for binary digit. A single piece of
information which is either a one (1) or a zero (0).
bps
An abbreviation for bits per second. Used to describe
data transfer rates.
Boot
To start-up a computer and load its operating system
from disc, ROM or other storage media into RAM.
Bus
An electrical circuit which passes data between the CPU
and the sub-assemblies inside your LifeBook notebook.
Byte
8 bits of parallel binary information.
Cache Memory
A block of memory built into the micro-processor which
is much faster to access than your system RAM and used
in specially structured ways to make your overall data
handling time faster.
CardBus
A faster, 32-bit version of the PC Card interface which
offers performance similar to 32-bit PCI architecture.
CD-R
Compact disc - read. A CD-R disc allows you to record
to it once, then play it repeatedly. CD-R’s typically
contain about 640 MB of data.
CD-ROM
Compact disc read only memory. This is a form of
digital data storage which is read optically with a laser
rather than a magnetic head. A typical CD-ROM can
contain about 640 MB of data and is not subject to heads
crashing into the surface and destroying the data when
there is a failure nor to wear from reading.
CD-RW
Compact disc - read/write. A CD-RW disc allows you to
record to it multiple times, then play it repeatedly. CD-
RW’s typically contain about 640 MB of data.
CMOS RAM
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.
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
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
intensity of the beam.
N34XX.book Page 95 Monday, September 12, 2005 5:13 PM