01.075: Character symbols

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  1. UNE 21321:1978▹

    LETTER SYMBOLS FOR SEMICONDUCTOR DEVICES AND INTEGRATED MICROCIRCUITS.

    standard by UNE, 06/15/1978.

    Languages:

    • 👥MULTI-USER

  2. HISTORICAL

    UNE 21405-1:1995▹

    This document has been replaced. View the most recent version.

    LETTER SYMBOLS TO BE USED IN ELECTRICAL TECHNOLOGY. PART 1: GENERAL.

    standard by UNE, 07/17/1995.

    Languages:

    Historical Editions: UNE-EN 60027-1:2009

    • 👥MULTI-USER

  3. UNE 21405-2:1996▹

    LETTER SYMBOLS TO BE USED IN ELECTRICAL TECHNOLOGY. PART 2: TELECOMMUNICATIONS AND ELECTRONICS.

    standard by UNE, 07/24/1996.

    Languages:

    Amendments, rulings, and supplements: UNE 21405-2/1M:2000

    • 👥MULTI-USER

  4. UNE 21405-2/1M:2000▹

    Letter symbols to be used in electrical technology -- Part 2: Telecommunications and electronics.

    Amendment by UNE, 09/30/2000.

    Languages:

    • 👥MULTI-USER

  5. UNE 21405-3:1994▹

    LETTER SYMBOLS TO BE USED IN ELECTRICAL TECHNOLOGY. PART 3: LOGARITHMIC QUANTITIES AND UNITS.

    standard by UNE, 12/05/1994.

    Languages:

    Amendments, rulings, and supplements: UNE 21405-3/1M:2000

    • 👥MULTI-USER

  6. UNE 21405-3/1M:2000▹

    Letter symbols to be used in electrical technology. Part 3: Logarithmic quantities and units.

    Amendment by UNE, 10/23/2000.

    Languages:

    • 👥MULTI-USER

  7. HISTORICAL

    UNE 21405-4:1995▹

    This document has been replaced. View the most recent version.

    LETTER SYMBOLS TO BE USED IN ELECTRICAL TECHNOLOGY. PART 4: SYMBOLS FOR QUANTITIES TO BE USED FOR ROTATING ELECTRICAL MACHINES.

    standard by UNE, 05/24/1995.

    Languages:

    Historical Editions: UNE-EN 60027-4:2011

    • 👥MULTI-USER

  8. HISTORICAL

    UNE-EN 21683:1995▹

    This document has been replaced. View the most recent version.

    ACOUSTICS. PREFERRED REFERENCE QUANTITIES FOR ACOUSTIC LEVELS. (ISO 1683:1983).

    standard by UNE-EN, 11/30/1995.

    Languages:

    Historical Editions: UNE-EN ISO 1683:2009

    • 👥MULTI-USER

  9. UNE-EN 60027-1:2009▹

    Letter symbols to be used in electrical technology -- Part 1: General

    standard by UNE-EN, 04/22/2009.

    Languages:

    Amendments, rulings, and supplements: UNE-EN 60027-1:2009/A2:2009

    Historical Editions: UNE 21405-1:1995

    • 👥MULTI-USER

  10. UNE-EN 60027-1:2009/A2:2009▹

    Letter symbols to be used in electrical technology -- Part 1: General

    Amendment by UNE-EN, 04/22/2009.

    Languages:

    • 👥MULTI-USER