Bellmac-32: The CMOS Gamble That Changed the World

In the late 1970s, Bell Labs engineers took a bold gamble, using cutting-edge 3.5-micron CMOS technology and a novel 32-bit architecture to create the Bellmac-32 microprocessor, aiming to surpass competitors like IBM and Intel. While not a commercial blockbuster, the Bellmac-32's pioneering use of CMOS laid the groundwork for the chips in today's smartphones, laptops, and tablets. Despite the high risks of this technology at the time, Bell Labs' teams across Holmdel and Murray Hill overcame manufacturing and testing challenges. Though it didn't become mainstream, the Bellmac-32's innovations in CMOS and chip architecture profoundly impacted the semiconductor industry, forging a new path.