SCD Single Character Display.
SCSI Small computer system interface.
segment
A part.
sel Select.
serialize
To change from parallel-by-byte to serial-by-bit.
serializer
A device that converts a space distribution of simultaneous states
representing data into a corresponding time sequence of states.
servo, servos
An adjective for use in qualifying some part or aspect of a
servomechanism.
servomechanism
A feedback control system in which at least one of the system signals
represents mechanical motion.
Small Computer Systems Interface (SCSI)
A standard used by computer manufacturers for attaching peripheral
devices (such as tape drives, hard disks, CD-ROM players, printers, and
scanners) to computers (servers). Pronounced “scuzzy”. Variations of the
SCSI interface provide for faster data transmission rates than standard
serial and parallel ports (up to 320 megabytes per second). The variations
include:
v Fast/Wide SCSI: Uses a 16-bit bus, and supports data rates of up to 20
MBps.
v SCSI-1: Uses an 8-bit bus, and supports data rates of 4 MBps.
v SCSI-2: Same as SCSI-1, but uses a 50-pin connector instead of a 25-pin
connector, and supports multiple devices.
v Ultra SCSI: Uses an 8- or 16-bit bus, and supports data rates of 20 or 40
MBps.
v Ultra2 SCSI: Uses an 8- or 16-bit bus and supports data rates of 40 or 80
MBps.
v Ultra3 SCSI: Uses a 16-bit bus and supports data rates of 80 or 160
MBps.
v Ultra160 SCSI: Uses a 16-bit bus and supports data rates of 80 or 160
MBps.
v Ultra320 SCSI: Uses a 16-bit bus and supports data rates of 320 MBps.
SMTP Simple Mail Transfer Protocol. SMTP is a standard for e-mail transmissions
across the internet.
SNMP
Simple Network Management Protocol. SNMP is used by network
management systems to monitor network-attached devices for conditions
that warrant administrative attention.
SMW Servo Manufacturer's Word.
SNS Sense.
Glossary H-13
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