Glossary
read/write head across the disk’s sur- face in order to read or write data in magnetic 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 Capabilities 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
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
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 10MBytes/sec on an
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 Device Electronics. A standard for communicating 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
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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