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14 Cards in this Set
- Front
- Back
what are pixels? |
small points of colored light that are arranged in a grid and formed by red, green, and blue |
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what is liquid crystal display? |
large amounts of pixels are combinded to make images appear here |
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how many bytes are devoted to each pixel? |
one |
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what is smallest intensity? |
0000 0000 |
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what is largest intensity? |
1111 1111 |
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what is brightness |
measures how close each pixel is to pure white and is increased by adding values to each pixel |
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what is contrast? |
measures the difference between the darkest and lightest portions of the image |
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what is frequency? |
number of sound waves per second |
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how do you digitize a sound wave? |
its info must be transformed into memory bits |
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what are samples? |
measurements taken of the sound wave at regular intervals |
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what is the sampling rate? |
the number of samples taken in a second |
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what is done to the process of recording sound in order to play a digital sound? |
the process is reversed |
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what is image compression? |
process which changes the digital image in order to use fewer bits to store and transmit info |
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what is run-length encoding |
tells how many 0's and 1's instead of the full code and no information is lost |