Dell OptiPlex GX240 User Manual

Page 284

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IDE

Integrated Device Electronics. An

ATA

specification for drive interface. This

is a common interface used primarily for hard drives and

drives. This

interface is commonly integrated directly into the computer’s system board,
and it allows up to four drives to communicate simultaneously with the
computer. See also

EIDE

Internet Protocol. The protocol governing how data is sent from one computer
to another on the Internet. See also

IP Address

and

TCP/IP

IP Address

Each computer on the Internet has at least one

address that uniquely

identifies it from all other computers on the Internet. When you send or
receive data on the Internet, it contains both the sender's and receiver's
addresses. See also

TCP/IP

IPX

Internetwork packet eXchange. A networking protocol from Novell

that

interconnects networks that use Novell NetWare

clients and servers. See

also

SPX

and

IPX/SPX

Internetwork Packet eXchange (

IPX

)/Sequenced Packet eXchange (

SPX

). A

Novell network communications protocol that functions similarly to

TCP/IP

IRQ

Interrupt request. An electronic pathway assigned to a specific

device

so that

the device can communicate with the

microprocessor

. Each device

connection must be assigned an IRQ. For example, the first

serial port

in your

computer is typically assigned to IRQ4. Although two devices can share the
same IRQ assignment, you cannot operate both devices simultaneously.

ISA

Industry-Standard Architecture. A standard for IBM-compatible

PCs

that

extends the

bus

architecture to 16

bits

. It also allows for bus mastering,

although only the first 16

RAM

are available for direct access. ISA is

sometimes referred to as

bus architecture.

ISO

International Organization for Standardization. A voluntary organization
founded in 1946, comprised of the national standards organizations of many
countries. ISO determines international standards in many areas, including
computers and communications.

ANSI

is the American member of ISO.