3.4.1.2 Values

The type of the quantity mainly determines their field of application. The number of values stored within a quantity depends on the application area:

• Global quantities store only single values.
• Segment quantities store values for each grid point for a certain segment within a certain device. The grid point is the center of the corresponding Voronoi box (see Section 2.3.1). A segment quantity may either be defined constant or distributed on the grid of that segment.
• Boundary quantities store values for each point defined on the interface between two segments. A boundary quantity may either be constant or distributed on the grid of that boundary.
• Mixed-mode quantities store a single value for each node of the circuit. If, however, the circuit consists of hundred nodes just one quantity is defined containing hundred values, one for each node. This approach has been chosen to avoid the definition of thousands of quantities even for small circuits.