1239.6533 is a Mentor release of a suite of engineering software for designing, verifying and diagnosing printed circuit boards (PCBs). It includes support for schematic-driven, mixed-signal and system-level design, and 3D modeling. It features improved board-level design features and workflow, allowing you to create and test PCBs faster and easier than ever before. This version also supports HDL-based digital, analog and mixed-signal design, allowing users to accurately design, simulate and verify their designs. Professional PCB designers can leverage these improvements to quickly turn around circuit boards in the most efficient way possible.