Juniper Systems Allegro DOS Manual - Manual (Page 106)

106 Allegro DOS Owner’s Manual
Glossary of DOS Terms
Following is a glossary of some basic terms relating to the operating
systems, memory, and data storage options.
AUTOEXEC.BAT File
An AUTOEXEC.BAT startup fi le contains default confi guration
information. There is an AUTOEXEC.BAT fi le on both the Allegro’s
C: and A: drive. The Allegro usually boots from the C: drive.
Therefore, the AUTOEXEC.BAT on the C: drive is activated fi rst.
It does not chain to A:. You can modify this fi le as needed for your
application.
Byte
A byte is the amount of space it takes to store one character.
CONFIG.SYS File
A CONFIG.SYS startup fi le contains default information that
confi gures the hardware components on a computer. There is a
CONFIG.SYS fi le on both the Allegro’s C: and A: drive. Because
the Allegro boots from the C: drive on default, the commands in
the CONFIG.SYS located on the C: drive are activated. You cannot
chain to other CONFIG.SYS fi les using MS-DOS. You can modify the
CONFIG.SYS fi le on drive C: if required.
Disks and Disk Drives
Computer disks can be classifi ed into two basic groups: Diskettes
and hard drives (also called fi xed drives). The Allegro uses a solid
state hard disk and PC card for program and data storage. The solid
state disk is non-volatile.
DOS
DOS is an acronym for Disk Operating System. DOS consists
of a set of commands or code which tells the computer how to
process information. DOS runs programs, manages fi les, controls
information processing, directs input and output, and performs
many other related functions.
File
A fi le is a defi ned set of related information electronically stored on
your Allegro or PC. Examples: a letter, a database, or a program.
Computer fi les are stored either in the computer’s internal memory
(RAM and ROM) or on storage media, typically disks (diskettes and
hard drives).
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