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