IEC 60050-171:2019

IEC 60050-171 ®
Edition 1.0 2019-03
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
HORIZONTAL STANDARD
NORME HORIZONTALE
International Electrotechnical Vocabulary (IEV) –
Part 171: Digital technology – Fundamental concepts

Vocabulaire Electrotechnique International (IEV) –
Partie 171: Technologies numériques – Concepts fondamentaux

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IEC 60050-171 ®
Edition 1.0 2019-03
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
HORIZONTAL STANDARD
NORME HORIZONTALE
International Electrotechnical Vocabulary (IEV) –

Part 171: Digital technology – Fundamental concepts

Vocabulaire Electrotechnique International (IEV) –

Partie 171: Technologies numériques – Concepts fondamentaux

INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
INTERNATIONALE
ICS 01.040.35 ISBN 978-2-8322-6081-4

– II – IEC 60050-171:2019 © IEC 2019

CONTENTS
FOREWORD . IV
INTRODUCTION Principles and rules followed . VIII
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
Section 171-01 – General . 3
Section 171-02 – Organization and representation of data . 18
Section 171-03 – Logic operations . 44
Section 171-04 – Hardware . 56
Section 171-05 – Software . 81
Section 171-06 – Data transfer . 114
Section 171-07 – Information theory . 120
Section 171-08 – Security . 148
Section 171-09 – Applications . 155

INDEX . 168

SOMMAIRE
AVANT-PROPOS . VI
INTRODUCTION Principes d’établissement et règles suivies . XI
1 Domaine d’application . 2
2 Références normatives . 2
3 Termes et définitions . 2
Section 171-01 – Généralités . 3
Section 171-02 – Organisation et représentation des données . 18
Section 171-03 – Opérations logiques. 44
Section 171-04 – Matériel . 56
Section 171-05 – Logiciel . 81
Section 171-06 – Transfert de données . 114
Section 171-07 – Théorie de l’information . 120
Section 171-08 – Sécurité . 148
Section 171-09 – Applications . 155

INDEX . 168

– IV – IEC 60050-171:2019 © IEC 2019
INTERNATIONAL ELECTROTECHNICAL COMMISSION
_______________
INTERNATIONAL ELECTROTECHNICAL VOCABULARY (IEV) –

Part 171: Digital technology – Fundamental concepts

FOREWORD
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International Standard IEC 60050-171 was prepared by IEC technical committee 1:
Terminology.
This first edition cancels and replaces Section 101-12 of IEC 60050-101:1998 [which is now
entirely cancelled and replaced by IEC 60050-102:1998 (for Section 101-11), IEC 60050-
103:1998 (for Sections 101-13, 101-14 and 101-15) and IEC 60050-171:2018 (for Section
101-12)] and Sections 714-21 to 714-24 of IEC 60050-714:1992. It has the status of a
horizontal standard in accordance with IEC Guide 108.
The text of this standard is based on the following documents:
FDIS Report on voting
1/2369/RVD
1/2363/FDIS
Full information on the voting for the approval of this standard can be found in the report on
voting indicated in the above table.

This publication has been drafted in accordance with the ISO/IEC Directives, Part 2.
In this part of the IEV, the terms and definitions are provided in French and English; in
addition the terms are given in Arabic (ar), German (de), Japanese (ja), Polish (pl),
Portuguese (pt) and Chinese (zh).
A list of all parts of the IEC 60050 series, published under the general title Inte
...