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. This standard sets forth principle...
IEEE Std 91-1973*ANSI Y32.14-1973 history
1991IEEE 91/91a-1991 IEEE Standard for Graphic Symbols for Logic Functions
1970IEEE 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)