This document defines computer and multimedia, and discusses the types of multimedia used in classroom instruction. It explains that multimedia uses a combination of different content forms like text, audio, images, animations, video and interactive content. Multimedia is contrasted with media that only uses rudimentary displays like text. Linear multimedia progresses sequentially without navigation, while non-linear multimedia requires interaction from the user and allows them to control the experience. The document also notes some disadvantages of computer and multimedia in classroom learning.