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API
Application Program Interface
. The interface through which an application
program accesses the
OS
and other services.
APIC
Advanced programmable interrupt controller
. Prioritizes and manages
IRQs
for the various devices in a
PC
. Without an APIC, the microprocessor must
control IRQs.
ASCII
American Standard Code for Information Interchange
. The basis of character
sets used in many present-day computers. ASCII can be used to convey some
control codes
, the space character, numbers, most basic punctuation, and
unaccented lower- and upper-case letters.
AT
Advanced Technology
. An IBM®
PC
introduced in 1984 that has an Intel
80286
microprocessor
, 16-bit
bus
, and 1.2
MB
floppy drive.
ATA
Advanced Technology Attachment
. A specification for drive interface. See
IDE
.
ATAPI
Advanced Technology Attachment Packet Interface
. An interface used to
connect
CD
, tape, and other drives with a computer.
B
Binary
A system of numbers having 2 as its base and using 0 and 1 for its notation.
Binary code is used by computers because it works well with digital electronics
and logic.
BIOS
Basic input/output system
. Composed of software and data stored on a
ROM
chip. The BIOS initializes communication between the
microprocessor
and
devices
such as the keyboard and video adapter. The BIOS also controls
system functions such as error messages and beep codes. The BIOS can be
updated, or “flashed,” which can correct errors, support new hardware, and
so on.
System setup
allows you to configure certain options in the BIOS.
Summary of Contents for OptiPlex GX50
Page 1: ...w w w d e l l c o m s u p p o r t d e l l c o m Dell OptiPlex GX50 Systems User s Guide ...
Page 10: ...x Contents ...
Page 40: ...38 Abo u t You r C o mp u t er w w w d e l l c o m s u p p o r t d e l l c o m ...
Page 113: ...Installing Upgrades 111 1 Floppy drive cable 2 Lever 1 2 ...
Page 117: ...Installing Upgrades 115 S ma l l D es k t op C om p u te r Small Mini Tow er Comput er ...
Page 136: ...134 Ins ta l l i n g Up g r a d es w w w d e l l c o m s u p p o r t d e l l c o m ...
Page 154: ...152 Microsoft Windows XP Features w w w d e l l c o m s u p p o r t d e l l c o m ...
Page 162: ...160 Te c h n ic a l Sp e c if ic a tio n s w w w d e l l c o m s u p p o r t d e l l c o m ...
Page 210: ...208 So lv ing Pr o ble m s w w w d e l l c o m s u p p o r t d e l l c o m ...
Page 232: ...230 Ge tt ing Help w w w d e l l c o m s u p p o r t d e l l c o m ...