Proteus 7.7 SP2 is an older but highly functional version of the Proteus Design Suite by Labcenter Electronics , primarily used for electronic design automation (EDA). It is a comprehensive tool that allows engineers and students to design schematics, simulate complex circuits, and create professional printed circuit board (PCB) layouts within a single environment .
Proteus 7.7 SP2 integrates two primary modules that allow users to move from initial concept to a finished physical board: PCB Design Software - Affordable, Powerful and Easy to Use Proteus 7.7 SP2 Portable