Josephine Ammer discusses designing robust arithmetic units for new semiconductors and wireless communications. As semiconductor technology is scaled, process variation becomes an ever-increasing problem. Designs incur a larger penalty to guarantee operation at the worst-case process corner. Many applications (wireless communication, audio and video signal processing, graphics, data mining, etc.) can tolerate certain levels of errors. The key challenge is ensuring those errors cause small changes in the final system output. From the Series:CSE Colloquia - 2007