Operating instructions

SCSI-2 Another SCSI standard that was the first SCSI standard to address all
aspects of SCSI in detail. SCSI-2 defined a common command set that allowed
all SCSI devices to communicate with one another.
SCSI-3 The latest SCSI standard that offers transfer rates up to 320 MBps.
SD (Secure Digital) A very popular format for flash media cards; also sup
-
ports I/O devices.
SDRAM (synchronous DRAM) A type of DRAM that is synchronous, or tied
to the system clock. This type of RAM is used in all modern systems.
SE (single-ended) A term used to describe SCSI-1 devices that used only one
wire to communicate a single bit of information. Single-ended SCSI devices are
vulnerable to common-mode noise when used in conjunction with SCSI cables
over 6 meters in length.
SEC (single-edge cartridge) A radical CPU package where the CPU was con-
tained in a cartridge that snapped into a special slot on the motherboard called
Slot 1.
sector A segment of one of the concentric tracks encoded on the disk during
a low-level format. A sector holds 512 bytes on data.
sector translation The translation of logical geometry into physical geome-
try by the onboard circuitry of a hard drive.
segment The bus cable to which the computers on an Ethernet network
connect.
serial port A common connector on a PC used to connect input devices
(such as a mouse) or communications devices (such as a modem).
server A computer that shares its resources, such as printers and files, with
other computers on a network. An example of this is a Network File System
Server that shares its disk space with a workstation that does not have a disk
drive of its own.
service pack A collection of software patches released at one time by a soft
-
ware manufacturer.
60 MIKE MEYERS’ A+ CERTIFICATION PASSPORT
Passport / Mike Meyers‘ A+ Certification Passport / Meyers / 226308-3 / Glossary
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