This presentation discusses computer memory and storage. It defines storage as providing capacity for files and information, while memory provides a working space. It outlines the primary, secondary, and tertiary levels of storage - with primary memory like RAM for running the computer, secondary long-term storage like HDD, and tertiary removable storage like CDs, DVDs, and memory cards. It also describes the two main types of RAM (random access memory) as SRAM and DRAM, and different types of ROM (read-only memory). Finally, it defines cache memory as a type of RAM that a CPU can access more quickly than regular RAM.