IEEE C57.12d-1957 - ASA Partial Revision of and Supplement to C57.12-1956

IEEE.org IEEE Xplore Digital Library IEEE Standards IEEE Spectrum More Sites

eTools Sign in

Standards
Find standards, standards in development, learn about the Standards Development Lifecycle, and much more!
Find Standards

Find Projects

Develop Standards

Buy Standards
eTools
Products & Services
Our products and services cover the complete standards development lifecycle...and beyond.
Products

National Electrical Safety Code

Registration Authority

Color Books

Standards Related Products
Services

Alliance Management Services

Conformity Assessment

Standards Development Services

View more Products & Services
Technologies & Initiatives
Explore our high-level initiatives, or foster new technologies via our Industry Connections program.
Initiatives

Council of Extended Intelligence

Ethics in Autonomous and Intelligent Systems

Wearables and Medical IoT Interoperability & Intelligence

Explore more initiatives
Technologies

Autonomous Systems

3D Body Processing

Big Data Governance and Metadata Management

Industry Consortium on Learning Engineering

Explore Industry Connections program
Participate
Join a global network of industry & technology experts that change the way people live, work, and communicate.
IEEE-SA Membership

Standards Development

Alliance Management Services

New Technologies
Awards

IEEE Certification

Initiatives

View all

MAC ADDRESS BUY STANDARDS

Standard

Superseded

IEEE C57.12d-1957 - ASA Partial Revision of and Supplement to C57.12-1956

Access Via Subscription

Explore This Standard

Standard Details
Additional Resources
Working Group

Standard Details

Status	Superseded
Board Approval	1957-08-30

Additional Resources Details

Pars	Approved PAR

Working Group Details

About

About Us
Corporate Program
Distributor Program
Global Engagement
Policies & Procedures
Standards Education
FAQs
Contact Us

Board of Governors (BoG)

About the BOG
Awards Committee
Corp. Advisory Group
Reg. Auth. Committee
SPCC

Standards Board (SASB)

About the SASB
Board Approvals
AudCom
ICCom
NesCom
PatCom
ProCom
RevCom

News & Events

Events
News
Standards Focus
Standards Newswire

Home
Sitemap
Contact & Support
Accessibility
Nondiscrimination Policy
IEEE Privacy Policy
IEEE-SA Copyright Policy

© Copyright 2018 IEEE – All rights reserved. Use of this website signifies your agreement to the IEEE Terms and Conditions.
A not-for-profit organization, IEEE is the world's largest technical professional organization dedicated to advancing technology
for the benefit of humanity.