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`Electronics
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`and Computer
`Acronyms
`
`Phil Brown *1;{mi
`TEng,MIMGTecliE MIED
`
`Editor. MG Book Publishing
`Former Editor: Whats New in Electronics and Electronics News
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`Butterworths
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`London Boston Singapore Sydney Toronto Wellington
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`E.
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`All rights reserved. No part of this publication may be
`reproduced or transmitted in any form or by any means,
`including photocopying and recording, without the written
`permission of the copyright holder, application for which should
`be addressed to the Publishers. Such written permission must
`also be obtained before any part of this publication is stored in
`a retrieval system of any nature.
`
`This book is sold subject to the Standard Conditions of Sale of
`Net Books and may not be re-sold in the UK below the net price
`given by the Publishers in their current price list.
`
`First published as Dictionary of Electrical, Electronics and
`Computer Abbreviations, 1985
`Revised edition 1988
`
`© P. R. Brown, 1988
`
`
`
`British Library Cataloguing in Publication Data
`Brown, Phil, 1950~
`Electronics and computer acronyms.—
`2nd ed.
`l. Electronic engineering. Abbreviations
`I. Title
`II. Brown, Phil, 1950~
`Dictionary of electrical, electronics and
`computer abbreviations
`621 .381’0148
`ISBN 0—408-02398-8
`
`
`
`
`
`
`The first e,
`acceptance
`However,
`publication
`This in its».
`
`continually
`others
`fin.
`standards.
`sustain this
`lag’ thWCL
`between 3
`
`every effor
`herein curt
`In this
`
`Computer.
`contents ~ .
`total to aln
`
`This exp
`typified by,
`reflecting ti
`and EBL n
`
`
`
`
`
`Library of Congress Cataloging-in-Publication Data
`
`Brown. Phil (Phil Raymond)
`Electronics and computer acronyms/Phil Brown. — Rev. ed.
`p. cm.
`Revision of: Dictionary of electrical. electronics, and computer
`abbreviations.
`Bibliography: p.
`ISBN—0-408—02398-8 :
`2. Electronics~Acronyms
`1. Electric engineering—Acronyms.
`3. Computers—Acronyms.
`I. Brown, Phil (Phil Raymond). Dictionary
`of electrical, electronics, and computer abbreviations.
`II. Title.
`TK9.B76
`1988
`87-37489
`621.381’0148—dcl9
`
`
`Photoset by Butterworths Litho Preparation Department
`Printed in Great Britain by Robert Hartnoll (1985) Ltd., Bodmin, Cornwall
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`which communicates with a computer having details of an
`individual’s account. See automatic teller machine (ATM) and ‘
`personal identification number (PIN).
`TELECOMM TELECOMMunication. Any process that allows
`information of any nature transmitted in a useable form (e. g.
`audible signals, visible signals, printed copy, fixed or moving
`pictures) to travel from a sender to one or more receivers. The
`transmission is achieved by means of any electromagnetic
`system (e.g. electrical
`transmission by wire,
`radio, optical
`means and guided waves).
`;
`TELEPUTER A combined TELEvision and COMPUTER.
`Designed to be the central component in the home telecom-
`munications services, this unit combines six major technologies;
`colour television, videotex, computing, video cassette record-
`ing, video disk and telecommunications. The system can be set
`to access automatically any number of computers, because it
`has a built-in personal computer capability. Data gathered can
`be manipulated, analysed and processed at the terminal under
`the control of various access programs.
`TELEX TELetypewriter EXchange service. An automatic dial-
`up dedicated switched network that provides for communica—
`tion between teletypewriter (TTY) and teleprinter equipment
`worldwide. A terminal is used to produce information on a
`paper tape (PT) which is fed into a reader and then transmitted.
`TEMP (l) TEMPerature. A measure of the average kinetic
`energy of
`the moving molecules or atoms in a material.
`Generally it
`is a measure of how hot or cold material
`is
`compared to a defined scale. The Systeme International de
`Unites (SI) unit of temperature is the kelvin (K), but
`the
`Celsius (C,8) or centigrade scale is normally used for everyday
`measurements.
`(BIT)
`(2) TEMPorary register. Typically a 12-binary digit
`memory location that holds or latches an arithmetic and logical
`unit (ALU) operation, in order to avoid race conditions before
`it is sent to a final memory location.
`TERA- A prefix denoting one million million, a billion (1012); for
`example a terabit is 10 2 binary digits (BITS).
`TFT (1) Thin—Film Transistor. Fabricated using thin-film techni—
`ques,
`typical of a thin-film transistor,
`is an insulated-gate
`fie1d~effect
`transistor
`(IGFET).
`It
`is manufactured on a
`substrate.
`(2) Thin-Film Technology. A technology in which electronic
`circuits or elements are formed by a process
`in which
`vacuum-deposited or sputtered films are produced upon a
`supporting material. TFTs can be considered as films that are
`244
`
`less than 5
`than 10 min
`THD Total
`distortion .
`
`production
`original au,
`THERMISTO
`cated from
`and named
`
`negative te:
`resistance
`
`positive tel»
`resistance
`forms covr
`—65% +7(
`
`THP Throw
`having circ
`the plating
`holes in thy
`Ti TItanium
`atomic nun
`
`melting p0
`TIMS Tram
`
`portable l
`analogue c
`compatiblt
`Consultatit
`
`impulse n:
`distortion _
`TIP Termin
`terminals 1
`TIPTOP Ta
`data to an
`device. Th
`
`magnetic :
`fabric tape
`TKO Trunl
`
`operator ti
`of the part.
`TZL Transis
`TLB Transl
`
`(BIT
`digit
`managemc
`translating
`TLU Table
`
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`‘H’A‘rm‘mtmmwWWWWWsWawvmn““”"‘”fi"”"“
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`‘ having details of an
`:r machine (ATM) and
`
`my process that allows
`in a useable form (e.g.
`copy, fixed or moving
`or more receivers. The
`)f any electromagnetic
`)y wire, radio, optical
`
`in and COMPUTER.
`t in the home telecom-
`; siX major technologies;
`, video cassette record-
`3. The system can be set
`f computers, because it
`ility. Data gathered can
`:d at the terminal under
`
`lice. An automatic dial—
`rovides for communica-
`d teleprinter equipment
`)duce information on a
`er and then transmitted.
`of the average kinetic
`‘ atoms in a material.
`rot or cold material
`is
`ysteme International de
`:he kelvin (K), but
`the
`rmally used for everyday
`
`(BIT)
`l2-binary digit
`a
`an arithmetic and logical
`id race conditions before
`
`isidered as films that are
`
`illion, a billion (1012); for
`(BITs).
`ed using thin—film techni-
`or,
`is an insulated-gate
`is manufactured on a
`
`tlogy in which electronic
`3y
`a process
`in which
`s are produced upon a
`
`
`
`
`
`less than 5 micrometres (,um) thick as opposed to films greater
`than 10 micrometres thick.
`THD Total Harmonic Distortion. A measure of
`
`the total
`
`distortion produced in an audio system as a result of the
`production, within that system, of harmonics or multiples of the
`original audio signal.
`THERMISTOR THERMally sensitive resISTOR. Usually fabri-
`cated from semiconductor material shaped as rod, bead or disk
`and named accordingly, thermistors are available in two forms:
`negative temperature coefficient (NTC) thermistors that have a
`resistance that decreases with increasing temperature, and
`positive temperature coefficient (PTC) thermistors that have a
`resistance that
`increases with increasing temperature. Both
`forms cover a range of temperature coefficient from around
`—65% +70% per degree celcius or centigrade (C,8).
`THP Through (the) Hole Plating. Printed circuit boards (PCBs)
`having circuits on both sides which are connected electrically by
`the plating that constitutes the circuit tracks passing through
`holes in the board.
`
`this metallic element has an
`Ti TItanium. Resembling iron,
`atomic number 22, atomic weight 47.90, specific gravity 4.5 and
`melting point of 1850 degrees celcius or centigrade (C,8).
`TIMS Transmission Impairment Measuring Set. Normally a
`portable unit designed for
`in—the-field characterization of
`analogue circuits for data communications. The sets are usually
`compatible with International Telegraph and Telephone
`Consultative Committee (CCITT)
`standards and measure
`impulse noise, random circuit noise,
`level versus frequency
`distortion and signal—to—noise ratio (SNR).
`TIP Terminal Interface Processor. A small computer connecting
`terminals to a packet-switching network.
`TIPTOP Tape InPut/Tape OutPut. A method for introducing
`data to an input device or reading data from an output (0,2)
`device. The technique can include the use of plastics or metallic
`magnetic tape (MAGTAPE), perforated paper tape (PT) or
`fabric tape loops.
`TKO TrunK Offering. An exchange facility permitting an
`operator to intrude into an established connection to offer one
`of the parties an incoming long-distance call.
`TZL Transistor—Transistor Logic. See TTL.
`TLB Translation Look—aside Buffer. Currently used in 32-binary
`digit (BIT) processors having an on chip (CHIP) memory
`management unit, a TLB that helps simplify the process of
`translating a logical address to a physical address.
`TLU Table Look Up. The action of finding a function value that
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