Installing, Configuring, and Troubleshooting Display and Multimedia Devices

Vocabulary flashcards covering display technology types, settings, connection standards, troubleshooting terms, and multimedia device fundamentals based on the lecture notes.

Cathode Ray Tube (CRT)

A legacy display technology that requires an analog signal from a display adapter to form a picture and is notably bulky.

Liquid Crystal Display (LCD)

A flat panel display type that uses digital signaling and chemicals whose properties change with the application of voltage to block light passage.

Pixel

The basic picture element in a color LCD, typically comprising cells or subpixels with filters for red, green, and blue.

Thin Film Transistor (TFT)

A type of LCD panel where liquid crystal elements and transistors are placed on a thin film to vary the intensity of each cell.

Twisted Nematic (TN)

A TFT type that produces good response times but is prone to motion blur and limited viewing angles.

In-Plane Switching (IPS)

A TFT arrangement that delivers better color reproduction and wider viewing angles, particularly vertical ones, at the cost of slightly worse response times.

Cold Cathode Fluorescent (CCFL)

A type of bulb used as a backlight in older or cheaper LCD displays.

Edge lit

An LED backlight arrangement where LEDs are placed around the screen rather than behind it, using a diffuser to distribute light.

OLED (Organic LED)

A display type that does not require a separate backlight, allowing for "True Black," thinner panels, and the potential for curved or flexible plastic screens.

Digital Light Processing (DLP)

A technology developed by Texas Instruments for projectors where each pixel is represented by a tilting mirror.

Resolution

The number of horizontal and vertical pixels used to create an image, such as $640 \times 480$.

Color depth

Also known as bit depth, this refers to the total number of colors supported in an image, such as 18-bit or 24-bit.

Native resolution

The specific resolution of a digital display based on its fixed number of pixels; using other resolutions requires interpolation, often making the image look "fuzzy."

Aspect ratio

The width of a screen divided by its height, common examples include $4:3$, $16:9$, or $16:10$.

Refresh rate

The speed at which a display updates the image, measured in Hertz ($Hz$).

Frame rate

The number of times the image in a video stream changes per second, expressed in Hertz ($Hz$) or Frames per Second ($fps$).

Response rate

The time taken for a pixel to change color, measured in milliseconds ($ms$); rates over $20\,ms$ can lead to "ghosting."

Luminance

The perceived brightness of a display screen, measured in candelas per square meter ($cd/m^2$).

Contrast ratio

A measure of the luminance of white compared to black, where higher ratios (above $600:1$) indicate better "true blacks."

Illuminance

The light projecting power of a projector, normally rated in ANSI lumens.

Privacy filter

A device that restricts the viewing angle of a monitor to the person directly in front of the screen to protect confidential information.

Video Graphics Array (VGA) port

A legacy blue 15-pin analog video interface, also known as HD15F or DE-15.

Digital Visual Interface (DVI)

A video cable type designed for flat panels, with versions including DVI-A (analog), DVI-D (digital), and DVI-I (integrated).

High Definition Multimedia Interface (HDMI)

A ubiquitous 19-pin interface (Type A) that supports digital video, audio, remote control (CEC), and content protection (HDCP).

DisplayPort

A royalty-free VESA standard that transmits packetized data in bonded lanes and supports "daisy-chaining" multiple monitors.

Graphics Processing Unit (GPU)

A specialized microprocessor optimized for rendering 2D and 3D images on-screen.

Scalable Link Interface (SLI)

The brand name for NVIDIA's technology that allows for the use of dual (or more) graphics cards in a single system.

Keystone effect

A distortion where the top of a projected image is wider or narrower than the bottom, caused by the projector lens being unaligned with the screen.

Burn-In

Permanent damage to a monitor's picture elements caused by displaying a static image for an extended period, resulting in a "ghost image."

High-bandwidth Digital Content Protection (HDCP)

A Digital Rights Management (DRM) mechanism that prevents playback of protected content if the display adapter and monitor fail to authenticate.

Digital Signal Processor (DSP)

The core chip of a sound card that contains Digital-to-Analog Converters (DACs) to process audio signals.

Musical Instrument Digital Interface (MIDI)

A protocol for exchanging information between electronic musical instruments and computers regarding volume, pitch, and tempo rather than actual sound waves.

JPEG

A lossy compression algorithm used by digital cameras to save space by discarding some image information.

Megapixel (MP)

The unit of measurement used to express the resolution of a digital camera.