Black Tech game changer-Marc Hannah

Anyone awed by the special effects in the films Jurassic Park, Terminator 2 and The Abyss should thank Hannah. The computer scientist is one of the founders, in 1982, of the software firm Silicon Graphics (now SGI), where the special-effects genius developed 3-D graphics technology that would be used in many Hollywood movies. Donkey Kong fans also owe a debt of gratitude to Hannah: He was instrumental in designing the Nintendo 64 gaming system.