Gustavo A. Ruiz was born in Burgos, Spain, in 1962. He received the M.Sc. degree in physics in 1985 from the University of Navarra, Spain, and the Ph.D. in physical science in 1989 from the University of Cantabria, Santander, Spain. Since 1985, he has been with the Department of Electronics and Computers at the University of Cantabria, where he is currently an Associate Professor. His current research interests are mainly focused on VLSI architectures for signal processing and high-speed arithmetic circuits.