Introduction to operating system design and implementation; the shell; process management and system calls; memory management; thread management, scheduling, synchronization and concurrency; file systems; input/output systems; virtual machines; and networking and security. Three lecture hours and one-and-one-half laboratory hour a week for one semester. Only one of the following may be counted: Electrical and Computer Engineering 461S, Electrical Engineering 461S, Electrical Engineering 379K (Topic: Operating Systems). Prerequisite: The following with a grade of at least C-: Electrical and Computer Engineering 312 (or Electrical Engineering 312) or 312H (or Electrical Engineering 312H), 319K (or Electrical Engineering 319K) or 319H (or Electrical Engineering 319H) and Mathematics 325K.