0001 IBG 1025
`CBM of U.S. Pat. No. 7,533,056
`
`

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`THIRD EDITION
`FIRST PRINTING
`
`Copyright 1990 by TAB BOOKS
`Printed in the United States of America
`
`Reproduction or publication of the content in any manner, without express
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`
`Library of Congress Cataloging-in-Publication Data
`
`Hordeski, Michael F.
`The illustrated dictionary of microcomputers / by Michael F.
`Hordeski.—3rd ed.
`p.
`cm.
`ISBN 0-8306-3368-5 (pbk.)
`ISBN 0-8306-7368-7
`1. Microcomputers——Dictlonaries.
`I. Title.
`TK7885.H67
`1990
`004.16’03—dc20
`
`.
`
`89-48453
`CIP
`
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`Book Editor: Pat Mulholland-McCarty
`Production: Katherine Brown
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`
`
`
`0002
`0002
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`default font
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`Output
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`
`Outputs
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`7
`
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`Typical ROM-RAM memory interface
`
`is a
`
`which the contents are decreased. Usually the decrement
`specific pan of the instruction word.
`dedicated Descriptive of machines. programs, or procedures that
`are designed,
`tailored, or reserved for specific uses. A dedi-
`cated communications line refers to a leased or private line that
`is used for a particular communications purpose. A dedicated
`microprocessor is one that
`is designed and programmed for a
`specific application, such as instrumentation.
`traffic control.
`or arithmetic calculations.
`'
`Dedicated Advanced Netwnre A network operating system gives
`compatibility with DOS 3.1. This allows multiuser software ap-
`plications developed for DOS 3.1 to run unmodified on Net-
`Ware. You also get intemal bridging that permits up to four
`supported networks to bridge through the File sewer. NetBlOS
`emulation allows software applications written for IBM net-
`works to run on any hardware that supports NetWare.
`Because Advanced NetWare is a multitasking operating
`system, the file server allows for maximum utilization of pro-
`cessing power when responding to several different requests
`from users, Advanced Netware uses such techniques as direc—
`tory hashing, disk caching and elevator seeking. Advanced Nev
`Ware is full compatible with Netl3IOS and most software and
`hardware developed for the IBM PC and Token Ring networks.
`it also has a security system to prevent unauthorized access to
`network infomiation.
`
`that has been reserved or
`dedicated channel A specific channel
`committed or set aside for a very specific use or application.
`dedicated circuit Refers to a communications circuit or channel
`that has been reserved or committed or allocated for a specific
`user or use.
`dedicated computer A computer that is devoted to a singular pro-
`cessing type activity. For example. a microcomputer used in an
`NC system is dedicated to machine tool activity.
`dedicated line A service offered by the common carriers in which a
`customer may lease, for exclusive use, a circuit between two or
`more geographic points.
`dedicated microprocessor techniques Refers to specific tasks that
`are assigned to the microprocessor to maintain its productivity.
`Instead of the processor waiting for external intenuption, it is
`put to work analyzing the external situation, continuously scan-
`ning and testing for inputs. The processor has complete com-
`mand of the operation knowing when to accept or ignore inputs.
`These simple but effective techniques reduce the need for ex:
`pensive and complex interrupt structures.
`default A value, parameter, option, or attribute that is assigned by
`the program or system when another has not been assigned by
`the user.
`default drive The drive that the disk operating system searches for
`the presence of a program.
`if no specific drive has been se—
`lectcd.
`
`
`
`0003
`0003