Covers the major concept areas of operating systems for both large and small computers and the interrelationship between the operating system and computer architecture. Topics include: history, tasking, process synchronization, scheduling, memory organization, device management, file systems, security issues, distributed and real-time systems. One or more projects form a significant part of this course. Springs. Prerequisite(s): (CS 3160 or CS 3220) and (CS 4250 or CS 4300).