Free Download Proteus Design Suite 9.1 SP2 | 809.1 MB Overview - Proteus Design Suite 9.1 SP2 Proteus Design Suite 9.1 SP2 by Labcenter Electronics is a comprehensive electronic design automation (EDA) software used for schematic capture, PCB layout, and simulation. Designed for professional engineers and educators, it combines schematic design, VSM simulation, and microcontroller prototyping in a single platform. The suite now introduces AI-powered tools - ProPilot for professionals and ProTutor for educational users - to accelerate design, verify circuits, and enhance productivity. Proteus