(n.) A display monitor capable of displaying many colors. In contrast, a monochrome monitor can display only two colors — one for the background and one for the foreground. Color monitors implement the RGB color model by using three different phosphors that appear red, green, and blue when activated. By placing the phosphors directly next to each other, and activating them with different intensities, color monitors can create an unlimited number of colors. In practice, however, the real number of colors that any monitor can display is controlled by the video adapter.
Color monitors based on CRT technology employ three different techniques to merge phosphor triplets into pixels:
Dot-trio shadow masks place a thin sheet of perforated metal in front of the screen. Since electrons can pass only through the holes in the sheet, each hole represents a single pixel.
Aperture-grille CRTs place a grid of wires between the screen and the electron guns.
Slot-mask CRTs uses a shadow mask but the holes are long and thin. It’s sort of a cross between the dot-trio shadow mask and aperture-grill techniques.
- color printer
A printer capable of printing more than one color. Most color printers are based on the CMYK color model, which prints in four basic colors: cyan, magenta, yellow, and black. By printing combinations of different colors close to each other (or, in the case of thermal dye transfer printers, on top of each other), the […]
- Color Saturation
In graphics and imaging, color saturation is used to describe the intensity of color in the image. A saturated image has overly bright colors. Using a graphics editing programyou can increase saturation on under-exposed images, or vise versa.
- color separation
The act of decomposing a color graphic or photo into single-color layers. For example, to print full-color photos with an offset printing press, one must first separate the photo into the four basic ink colors: cyan, magenta, yellow, and black (CMYK). Each single-color layer is then printed separately, one on top of the other, to […]
- color temperature
Color temperature refers to a characterization of the spectral properties of a light source and is commonly used during the production phase in the film and photography industries. Low color temperature is the warmer, more yellow to red light while high color temperature is the colder, more blue light. Daylight, for example, has a lower […]
(1) On a display screen in character mode, a column is a vertical line of characters extending from the top to the bottom of the screen. The size of a text display is usually measured in rows and columns. (2) In spreadsheets, a column is a vertical row of cells. Spreadsheet columns are usually identified […]