This is a description for a learning module from Maricopa Advanced Technology Education Center. This PDF describes the module; access may be purchased by visiting the MATEC website. PC memory is one of the most critical and rapidly advancing assemblies within modern microcomputers. The challenge of developing learners' knowledge of PC memory and keeping it current and directly applicable to today's microcomputer industry is addressed by this module. The three major topics included in this module are ROM/Flash, System Memory, and Cache Systems. Hands-on practice and final skill assessment verify learners' readiness for working with memory in an Intel-based PC system.