Software Implementation Techniques VMS UNIX OS MSDOS - Programmer's Series Author:Author Unknown Learn the ins and outs of four widely used operating systems, VMS, UNIX, OS/2, and MS-DOS ¦ with this all-inclusive guide. Written by an experienced computer systems support specialist, it examines scheduling, synchronization techniques, file management, — memory management, and more - bridging the transition from one operating system to another.... more » The book helps you design applications that run on one or more of these systems or port existing applications to a new system. Examples provide building blocks to