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JANUS? 2020 Hand-Held Computer (4MB) - Intermec

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Glossary<br />

G<br />

serial communications<br />

With serial communications, data is transmitted one bit at a time over a single<br />

line from one computer to another. Often serial communications link host<br />

computers to terminals and PCs to printers.<br />

serial communications parameters<br />

Parameters that control serial communications from one computer to another,<br />

such as baud rate and parity.<br />

server<br />

The computer that contains the drives, directories, files, and programs you<br />

want to access. See also client.<br />

SOM<br />

Start of Message character. The first character in messages sent to or received<br />

from the host.<br />

SOP<br />

Start of Program Block character. Sent by the host at the beginning of a block of<br />

IRL program statements.<br />

spotting beam<br />

An aiming feature of a laser scanner. A small beam of light briefly shines on<br />

the object being scanned, allowing the operator to position the scanner<br />

correctly for a good read.<br />

SRAM drive<br />

Static RAM. See RAM drive.<br />

SRAM PC card<br />

A type of memory PC card that provides additional disk storage space, not<br />

more executable conventional memory, on the reader. An SRAM card has a<br />

lithium battery to back up data for the life of the battery.<br />

stop bits<br />

A bit that signals the end of a character. One of the serial communications<br />

parameters.<br />

G-23

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