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

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

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<strong>JANUS</strong> <strong>2020</strong> <strong>Hand</strong>-<strong>Held</strong> <strong>Computer</strong> User’s Manual (<strong>4MB</strong>)<br />

G-16<br />

logical COM4<br />

Logical COM4 is the communications port for RF communications in a JR<strong>2020</strong>.<br />

This COM port is different from COM4, which is the Type II PC card drive<br />

when it contains a modem card. Accessing an RF network through logical<br />

COM4 does not conflict with accessing a serial communications network<br />

through COM4.<br />

LRC<br />

Longitudinal redundancy check character. This character is an error-checking<br />

character that is optionally appended to transmitted blocks of data and<br />

optionally checked on received blocks of data.<br />

MakeDisk<br />

One of two programs you can use to change the contents of the ROM drives.<br />

MakeDisk creates an image file containing the files you want on a ROM drive.<br />

You can run MakeDisk on a host computer, on the reader’s PC card drive, or<br />

on the reader’s RAM drive.<br />

memory cards<br />

See PC cards.<br />

Modulus 43 check character<br />

Check character derivation method for Code 39.<br />

modem card<br />

A Type II PC card that converts one form of a signal to another, which is<br />

suitable for transmission over communications circuits, typically from digital to<br />

analog and then from analog to digital.<br />

MS-DOS Programs companion disk<br />

One of the disks that <strong>Intermec</strong> ships with your <strong>JANUS</strong> reader. This disk<br />

contains commands and device drivers. Some of these commands and drivers<br />

are already installed on the reader. This disk also contains applications, such as<br />

INTERLNK.EXE, MakeDisk, and PutDisk.<br />

MSI code<br />

Similar to Plessey code. MSI code includes a start pattern, data characters, one<br />

or two check digits, and a stop pattern. It is fixed length, continuous, and non<br />

self-checking. This code is used to mark retail shelves for inventory reordering.<br />

The character set is 0 to 9 plus additional symbols.

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