Micronics PCI/ISA System Board D6-IN Manuel d'utilisateur télécharger pdf (Page 75)

M6DPi System Board Manual

Glossary

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write head across the disk’s surface in

order to read or write data in mag-

netic code.

DRAM - An acronym for Dynamic

Random Access Memory. A type of

memory chip that only keeps its

memory if supplied with regular clock

pulses and a chance to regularly re-

fresh its data. It is slower and more

cost effective than SRAM. See

SRAM.

ECC - An acronym for Error Check-

ing and Correction. ECC enables par-

ity checking and can detect and cor-

rect memory errors on the system

board.

ECP - An acronym for Expanded Ca-

pabilities Port. A standard set by

Hewlett Packard and Microsoft Cor-

poration to expand the capabilities of

the parallel port.

EDO Memory - An acronym for Ex-

tended Data Out. A type of DRAM

with built-in cache for enhanced per-

formance.

EISA - An acronym for Extended In-

dustry Standard Architecture. EISA

is a bus design standard which is fully

backward compatible with the ISA

bus. Although it is a 32-bit bus, it only

runs at 8MHz. See PCI, VESA Local

Bus and ISA.

EPP - An acronym for Enhanced Par-

allel Port. A standard which increases

the capabilities of the parallel port.

EPROM - Acronym for Erasable Pro-

grammable Read Only Memory. A

type of ROM chip that can be pro-

grammed with relatively simple tools

that will retain its data until erased. It

can only be erased by exposing the cir-

cuitry in the chip to ultraviolet light.

See also Flash ROM.

Fast SCSI - A SCSI data transfer rate

standard that allows a rate of up to 10

MBytes/sec on an 8-bit SCSI bus and

up to 20 MBytes/sec on a 16-bit

(Wide) SCSI bus.

Flash ROM - A type of ROM chip

that will retain its data until erased. It

can be erased or reprogrammed by

supplying it with +12V of voltage. See

ROM and EPROM.

Gigabyte - A disk storage capacity

measurement. Approximately one

thousand megabytes or 1,073,741,824

bytes.

IDE - An acronym for Integrated De-

vice Electronics. A standard for com-

municating between a hard drive and

a computer.

Internal Cache - Cache which is built

into the CPU. See Cache.

ISA - An acronym for Industry Stan-

dard Architecture. A well-established

bus standard that originated with the

IBM AT. See PCI, VESA Local Bus

and EISA.

Parallel - A form of data transmission

in which the data is sent one byte at a

time over several wires that each carry

one byte. In parallel transmission, all

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