This guide is intended for use in a course in programming and operating a computerized numerical control system. Addressed in the course are various aspects of programming and planning, setting up, and operating machines with computerized numerical control, including selecting manual or computer-assigned programs and matching them with program/language definitions, determining speeds and operating modes, computing tool coordinates and workpiece geometries, verifying cutter paths, plotting programs, programming tool change procedures, matching codes with responses, calculating running times, preparing tapes, writing manual programs, programming with purchased software, designing special features for custom jobs, repairing broken tapes, updating programs for engineering changes, determining job priorities, scheduling programs, checking tooling sheets, installing and loading tools, making dry runs of programs, adding and altering commands, editing programs, running segments of programs, performing sequence searching, and resetting equipment. Each unit contains some or all of the following: a guide sheet consisting of a duty statement, performance and enabling objectives, a list of resources, teaching activities, criterion-referenced measures, and performance guides; visual aids; student worksheets and answers; and checklists. Appendixes include a cross-referenced list of tasks and job titles, definitions, a list of necessary tools and equipment, and a 38-item bibliography. (MN)