| A | B |
| Operating System | Is a collection of programs designed to control all of the hardware and application software on the computer. |
| DOS | The original operating system developed for the PC. DOS is text-based software. |
| GUI | Used for interacting with users. Has menus, pictures and icons for the user to point and click. |
| Interoperability | The ability for different operating systems to communicate and share information with one another. |
| Desktop | The first screen that appears when you log into a computer. |
| WYSIWYG | An instant preview of what is available |
| UNIX | First multi-user operating system |
| Linux | Is free and modifiable. It was created off from UNIX. |
| Embedded Operating System | Manages and controls operations on a specific type of equipment. |
| Booting | The process of turning on a computer and loading the operating system. |
| ROM-BIOS | This is stored on a ROM chip and makes the bootup procedure possible. |
| Sleep | Is a standby mode that uses less power. Maintains current state of programs and files. |
| Hibernate | Writes the programs and files to the hard drive. Designed to save battery power |
| Hardware | The physical components of a computer system. Something you can physically touch |
| Software | The operating system and application software that run on a computer |
| Patches | Is a file of programming code that is inserted into a program to fix a known problem |
| Updates | Is a file or collection of software tools that resolve security issues and improves performance |
| Service Packs | Is a collection of updates. |
| GIGO | An acronym used to describe when a user enters incorrect information into a computer and receives incorrect information back. |