`--
`The Complete Illustrated Desk Reference
`
`Fourth Edition
`
`Alan Freedman ,
`•
`
`amacom
`
`American Management Association
`
`BNA/Brose Exhibit 1056
`IPR2014-00417
`Page 1
`
`
`
`Library of Congress Cataloging-in-Publication Data
`
`Freedman, Alan, 1942-
`The computer glossary: the complete illustrated desk reference/
`Alan Freedman. -4th ed.
`p. em.
`Rev. ed. of: The computer glossary for everyone. 3rd ed. © 1983.
`ISBN 0-8144-7709-7 (pbk.): $24.95
`1. Computers-Dictionaries. 2. Electronic data processing-Dictionaries.
`I. Freedman, Alan, 1942- The computer glossary for everyone. II. Title.
`QA76.15.F734 1988
`004'.03'21-dc 19
`
`88-26235
`
`Copyright @ 1989
`The Computer Language Company Inc.
`Point Pleasant, Pennsylvania 18950-0265
`(215) 297-8082
`
`FOURTH EDITION
`
`The fourth edition of The Computer Glossary is published by the AM A COM
`Division of the American Management Association. The third edition was
`published by Prentice-Hall, under ISBN 0-13-164483-1, and by The Computer
`Language Company Inc., under ISBN 0-941878-02-3.
`
`All rights reserved. No part of this book may be reproduced in any form or by
`any means without permission in writing from the publisher.
`
`Printed in the United States of America.
`
`10 9 8 7 6 5 4 3 2 1
`
`BNA/Brose Exhibit 1056
`IPR2014-00417
`Page 2
`
`
`
`log-on/log-off
`Log-on/log-off is making a connection and breaking a connection between a user
`and the computer. The log-on requires users to sign in and identify themselves.
`The log-off breaks the connection. Service bureaus charge their customers from
`the time they log-on until the time they log-off.
`
`logic
`Logic refers to a sequence of operations that is performed by the hardware or the
`software. Hardware logic is the circuits and chips that perform the computing
`and controlling operations of the computer. Software logic, or program logic, is
`the sequence of instructions in a program.
`Note: Logic is not the same as logical. Logical refers to the design of a system,
`rather than its physical implementation. See logical vs physical.
`
`logic analyzer
`(1) A logic analyzer is a device that monitors the performance of a computer by
`timing various segments of the running programs. The total running time and
`the time spent in selected progam modules is analyzed and displayed in order to
`isolate the code that is the least efficient.
`
`(2) A logic analyzer is a device that is used to test and diagnose an electronic
`system, which includes an oscilloscope for displaying various digital states.
`
`logic array
`Same as gate array or PIA.
`
`logic bomb
`A logic bomb is a program that destroys data; for example, it may reformat the
`hard disk or randomly insert garbage into data files. A logic bomb may be
`brought into a personal computer by downloading a public-domain program that
`has been tampered with. Once executed, the logic bomb usually does its damage
`right away, whereas a software virus slowly invades a system and attaches itself to
`other programs.
`
`logic chip
`A logic chip is a chip that performs logic functions, such as processing and
`controlling. Contrast with memory chip, which functions as internal working
`storage.
`
`The Computer Glossary
`
`413
`
`BNA/Brose Exhibit 1056
`IPR2014-00417
`Page 3
`
`
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