Berkeley Engineering has profiled EECS Prof. Emeritus Donald Pederson (1925-2005) for it’s web series celebrating Berkeley’s 150th anniversary. Pederson created an integrated circuit computer simulation program called SPICE (Simulation Program with Integrated Circuit Emphasis), one of the first open-source computer programs. It allowed computer engineers to analyze and design complex electronic circuitry quickly and accurately. Today, every electronic chip manufacturer uses SPICE or one of its derivatives during critical stages of design.