The document discusses computers, software, and instructional software. It defines computers as consisting of hardware like monitors, keyboards, and processors, as well as software which tells the computer what to do. There are two types of software: systems software like operating systems, and applications software for specific tasks. Applications software can be custom software for corporations or commercial packages for personal use. Instructional software can be found online or purchased, and teachers should carefully evaluate resources based on pedagogical principles to ensure accuracy, effectiveness, and lack of bias.