[4] He was responsible for the logic design of the input-output channel control units of ILLIAC III.
[2] After working in The Hague for Shell for two years, he returned to academia, taking a faculty position at the University of Southern California in 1972.
[10] Hayes became an IEEE Fellow in 1985 "for contributions to digital testing techniques and to switching theory and logical design",[11] and an ACM Fellow in 2001 "for outstanding contributions to logic design and testing and to fault-tolerant computer architecture.
"[12] In 2004, the University of Illinois Urbana-Champaign department of electrical and computer engineering gave him their distinguished alumni award.
[4] In 2013, the IEEE Computer Society Test Technology Technical Community honored Hayes with Lifetime Contribution Medal.