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Maintenance Chp 9
| Term | Definition |
|---|---|
| 1394a | A data transmission standard used by computers and peripherals (for example, a video camera) that transmits at 400 Mbps. |
| 1394b | A data transmission standard used by computers and peripherals (for example, a video camera) that transmits at 800 Mbps. |
| A-Male connector | A common type of USB connector that is flat and wide and connects an A Male USB port on a computer or USB hub. |
| artifact | Horizontally torn image on a computer screen. |
| B-Male connector | A USB connector that connects a USB 1.x or 2.0 device such as a printer |
| barcode reader | Used to scan barcodes on products at the points of sale or when taking inventory. |
| biometric device | An input device that inputs biological data about a person; the data can identify a person's fingerprints, handprints, face, voice, eyes, and handwriting. |
| burn-in | When a static image stays on a monitor for many hours, leaving a permanent impression of that image on the monitor. |
| Cold Cathode Fluorescent Lamp (CCFL) | An older backlighting technology that uses one or two fluorescent tubes to light a monitor panel. |
| composite video port | A port used by television or by a video card that is designed to send output to a TV. It is round and has only a single pin in the center of the port. Also called RGB port. |
| contrast ratio | The contrast between true black and true white on a screen. |
| dead pixel | A pixel on an LCD monitor that is not working and can appear as a small white, black, or colored spot on the computer screen. |
| Device Manager | The primary Windows tool for managing hardware. |
| digital rights management (DRM) | Software and hardware security limitations meant to protect digital content and prevent piracy. |
| DirectX | A Microsoft software development tool that software developers can use to write multimedia applications, such as games, video-editing software, and computer-aided design software. |
| DisplayPort | A port that transmits digital video and audio (not analog transmissions) and is slowly replacing VGA and DVI ports on personal computers. |
| distorted geometry | Images are stretched inappropriately on a monitor. |
| DVI-A | A DVI (Digital Visual Interface) video port that only transmits analog data. |
| DVI-D | A DVI (Digital Visual Interface) video port that works only with digital monitors. |
| DVI-I | A DVI (Digital Visual Interface) video port that supports both analog and digital monitors. |
| dxdiag.exe | A Windows command used to display information about hardware and diagnose problems with DirectX. |
| FireWire 400 | A data transmission standard used by computers and peripherals (for example, a video camera) that transmits at 400 Mbps. Also called 1394a. |
| FireWire 800 | A data transmission standard used by computers and peripherals (for example, a video camera) that transmits at 800 Mbps. Also called 1394b. |
| ghost cursor | A trail on the screen left behind when you move the mouse. |
| graphics tablet | An input device that can use a stylus to hand draw. It works like a pencil on the tablet and uses a USB port. |
| HDMI connector | A connector that transmits both digital video and audio and is used on most computers and televisions. |
| HDMI mini connector | A smaller type of HDMI connector used for connecting some devices such as a smart phone to a computer. |
| hot-swappable | The ability to plug or unplug devices without first powering down the system. |
| Infrared (IR) | An outdated wireless technology that has been mostly replaced by Bluetooth to connect personal computing devices. |
| In-Plane Switching (IPS) | A class of LCD monitor that offers truer color images and better viewing angles, but is expensive and has slower response times. |
| inverter | An electrical device that converts DC to AC. |
| KVM (Keyboard, Video, and Mouse) switch | A switch that allows you to use one keyboard, mouse, and monitor for multiple computers. Some also include sound ports so that speakers and a microphone can be shared among multiple computers. |
| LCD ( display) monitor | These display produces an image using a liquid crystal material made of large, easily polarized molecules. Also called flat-panel monitor. |
| LED (light-emitting diode) | A technology used in an LCD monitor that uses less mercury than earlier technologies. |
| MIDI (musical instrument digital interface) | A set of standards that are used to represent music in digital form. This port is a 5-pin DIN port that looks like a keyboard port, only larger. |
| Mini-DIN-6 connector | A 6-pin variation of the S-Video port and looks like a PS/2 connector used by a keyboard or mouse. |
| Mini DisplayPort | A smaller version of DisplayPort that is used on laptops or other mobile devices. |
| Mini PCI | The PCI industry standard for desktop computer expansion cards, applied to a much smaller form factor for laptop expansion cards. |
| Mini PCI Express (Mini PCIe) | A standard used for laptop internal expansion slots that follows the PCI Express standards applied to laptops. |
| motion controller | An input device that senses the motion of your fingers and hands. Also called motion sensor. |
| native resolution | The actual (and fixed) number of pixels built into an LCD monitor. |
| OLED (organic light-emitting diode) monitor | A type of monitor that uses a thin LED layer or film between two grids of electrodes and does not use backlighting. |
| pixel | A small spot on a fine horizontal scan line. They are illuminated to create an image on the monitor. |
| pixel pitch | The distance between adjacent pixels on the screen. |
| plasma monitor | A type of monitor that provides high contrast with better color than LCD monitors. They work by discharging xenon and neon plasma on flat glass and don't contain mercury. |
| projector | Used to shine a light that projects a transparent image onto a large screen and is often used in classrooms or with other large groups. |
| refresh rate | As applied to monitors, the number of times in one second the monitor can fill the screen with lines from top to bottom. Also called vertical scan rate. |
| resolution | The number of pixels on a monitor screen that are addressable by software (example: 1024 x 768 pixels). |
| response time | The time it takes to build one frame on a monitor screen. |
| sound card | An expansion card with sound ports. |
| stylus | A device that is included with a graphics tablet that works like a pencil on the tablet. |
| touch screen | An input device that uses a monitor or LCD panel as a backdrop for user options. They can be embedded in a monitor or LCD panel or installed as an add-on device over the monitor screen. |
| TV tuner card | An adapter card that receives a TV signal and displays TV on the computer screen. |
| Twisted Nematic (TN) | class of LCD monitor that has fast response times to keep fast-moving images crisper, but monitors are brighter, consume more power, and have limited viewing angles. |
| VGA mode | Standard VGA settings, which include a resolution of 640 x 480. |
| video capture card | An adapter card that captures video input and saves it to a file on the hard drive. |
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acat521
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