Changes

Pins are used to connect a device to wires and other parts in your schematic. A symbol must have at least one pin to make the device connectable and useful. In the Symbol Editor, pins are displayed as very small hollow squares that are connected to the body of the device (graphics) using straight lines or leads. In the [[Schematic Editor]], the pins of a part are displayed as small solid green circles. When you click on a pin in the [[Schematic Editor]], its border turns red to imply that it has been selected. When you draw a wire in the [[Schematic Editor]] and drag it onto a pin, the pin's boundary turns to a red square, implying that a circuit connection to that pin is about to be made. Each pin of a symbol must have a unique name. You can use numbers or letters or a combination of them or longer meaningful names to identify the pins of a symbol.