11.2. Component Library Overview

• Graphical items (lines, circles, arcs, text, etc ) that provide the symbolic definition.
• Pins which have both graphic properties (line, clock, inverted, low level active, etc ) and electrical properties (input, output, bidirectional, etc.) used by the Electrical Rules Check (ERC) tool.
• Fields such as references, values, corresponding footprint names for PCB design, etc.

• Defining if the component is made up of one or more units.
• Defining if the component has an alternate body style also known as a De Morgan representation.
• Designing its symbolic representation using lines, rectangles, circles, polygons and text.
• Adding an alias if other components have the same symbol and pin out or removing one if the component has been created from another component.
• Adding optional fields such as the name of the footprint used by the PCB design software and/or defining their visibility.
• Documenting the component by adding a description string and links to data sheets, etc.