The document defines basic computer hardware and software terms. It describes hardware components like the CPU, disk drive, hard drive, keyboard, modem, monitor, mouse, and network interface card. It also explains software concepts such as applications, bits, bytes, bugs, browsers, databases, downloads, drivers, files, folders, freeware, gigabytes, graphical user interfaces, icons, internet protocols, menus, networks, peripherals, RAM, ROM, scroll bars, shareware, spreadsheets, toolbars, URLs, viruses, windows, and word processors.