This seventh of 10 blocks of student and teacher materials for a secondary/postsecondary level course in electronic principles comprises one of a number of military-developed curriculum packages selected for adaptation to vocational instruction and curriculum development in a civilian setting. Prerequisites are the previous blocks. This block on digital techniques contains five modules covering 35 hours of instruction on numbering systems and mathematical computations (7 hours); logic functions and boolean equations (7); logic circuits and diagrams (8); counters, registers, and storage devices (7); and digital/analog converters (6). Printed instructor materials include a plan of instruction detailing the units of instruction, duration of the lessons, criterion objectives, and support materials needed. Student materials include a student text and five guidance packages containing objectives, assignments, review exercises, and answers for each module. A digest of the modules in the block is provided for students who need only to review the material. Designed for self- or group-paced instruction, the material can be adapted for individualized instruction. Additional print and audiovisual materials are recommended but not provided. (YLB)