the higher the number of dots, the clearer and sharper the image. Resolution clarity is measured by the formula horizontal-row pixels × vertical-row pixels. For example, a 1,024 × 768 screen displays 1,024 pixels on each of 768 lines, for a total of 786,432 pixels. On color monitors, each pixel is assigned to be red, green, blue, or a particular shade of gray. Color depth: Color depth, or bit depth, is the amount of information, expressed in bits, that is stored in a dot. The more bits in a dot or pixel, the more shades of gray and colors can be represented. With 24-bit color depth, for example, 8 bits are dedicated to each primary color—red, green, and blue (3 × 8 = 24). If you’re not doing anything professionally with graphic art, photography, or videos, then you’ll most likely be content with a monitor color depth of 24 bits, which is standard for most of
computing; 30- to 64-bit color (called deep color: over 1 billion colors), requires more resources, such as a special video card, supporting operating system, and a lot of video memory. Refresh rate: Refresh rate is the number of times per second that the pixels are recharged so that their glow remains bright. That is, refresh rate refers to the number of times that the image on the screen is redrawn each second. The higher the refresh rate, the more solid the image looks on the screen and the smoother the video (older monitors will flicker at a low refresh rate). In general, displays are refreshed 60-600 times per second, or hertz (Hz). A flat-screen monitor usually has a refresh rate
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- Summer '17
- ALBERT DOMINIC
- Color depth, Refresh rate, Source dataentry devices