14+ Schematic Input Output Symbols Background. Device and subcircuit symbols created for use in schematics that are intended to be run as spice simulations, in addition to having a pcb prefix that is used for the reference designator in the schematic, also have a spice prefix. American national standards institute (ansi) and the international electrotechnical commission (iec).
Circuit symbols are used in circuit diagrams (schematics) to represent electronic components.
Schematic symbol preferences are very personal, but it is important to make them understandable. For some electronic circuits this symbol is used for the 0v (zero volts) of the the output of a not gate is the inverse (opposite) of its input, so the output is true when the input is false. They also have two sets of pin numbers: There is one other type of object on a hard drive that has a name, and that is a directory.