IEEE 91-1973
Standard Graphic Symbols for Logic Diagrams (Two-State Devices)

Standard No.

IEEE 91-1973

Release Date

1973

Published By

IEEE - The Institute of Electrical and Electronics Engineers@ Inc.

Status

Be replaced

Replace By

IEEE 91/91a-1984

Latest

IEEE 91/91a-1991

Scope

This standard sets forth principles governing the formation of graphic symbols for logic diagrams in which the connections between symbols are generally shown with lines. Descriptions of logic functions@ the graphic representation of these functions@ and examples of their applications are given. Purpose. This standard establishes the graphic symbols for use in the preparation of logic diagrams representing logic functions implemented with two-state devices. The primary purpose of this standard is to enable a user to readily read and understand the function of the logic without requiring a specific knowledge of the constructional details of the device represented.

IEEE 91-1973 history

• 1991 IEEE 91/91a-1991 IEEE Standard for Graphic Symbols for Logic Functions
• 1970 IEEE 91/91a-1984 IEEE Standard Graphic Symbols for Logic Functions (Including and incorporating IEEE Std 91a-1991, Supplement to IEEE Standard Graphic Symbols for Logic Functions)
• 1973 IEEE 91-1973 Standard Graphic Symbols for Logic Diagrams (Two-State Devices)
• 1962 IEEE 91-1962 GRAPHIC SYMBOLS FOR LOGIC DIAGRAMS