Restricted to computer science majors. An introduction to low-level computer design ranging from the basics of digital design to the hardware/software interface for application programs. Includes basic systems principles of pipelining and caching, and requires writing and understanding programs at multiple levels. Four lecture hours and two discussion hours a week for one semester. Computer Science 429 and 429H may not both be counted. Prerequisite: The following courses with a grade of at least C-: Computer Science 311 or 311H; and Computer Science 314 or 314H.