| A | B |
| Bug | An error or defect in software or hardware that causes a program to malfunction. |
| Virus | A program or piece of code that is loaded onto your computer without your knowledge and runs against your wishes. |
| Worm | A program or algorithm that replicates itself over a computer network and usually performs malicious actions such as using up the computer's resources and possibly shutting the system down. |
| Crash | A serious computer failure. |
| Delete | Removing an item of data from a file or removing a file from a disk. |
| Scanner | A device that reads a printed page and converts it into an image for the computer. |
| Warm Boot | Restarting the computer by using a reset operation. |
| Cold Boot | Starting the computer by turning on the power source of the computer. |
| Input | Information or data that is entered into the computer. Input may be entered by the use of a mouse, keyboard, microphone, scanner, memory stick or card, digital camera, etc. |
| Output | Any computer-generated information displayed on a screen, printed on a piece of paper, stored on a disk or CD-ROM, stored on memory stick or card, zip or jazz drive, etc. |
| Digital Camera | A still or video camera that stores images in digital form. |
| Hard Copy | Printed output or a piece of paper with data on it. |