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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

what is liquid crystal display?

large amounts of pixels are combinded to make images appear here

how many bytes are devoted to each pixel?

one

what is smallest intensity?

0000 0000

what is largest intensity?

1111 1111

what is brightness

measures how close each pixel is to pure white and is increased by adding values to each pixel

what is contrast?

measures the difference between the darkest and lightest portions of the image

what is frequency?

number of sound waves per second

how do you digitize a sound wave?

its info must be transformed into memory bits

what are samples?

measurements taken of the sound wave at regular intervals

what is the sampling rate?

the number of samples taken in a second

what is done to the process of recording sound in order to play a digital sound?

the process is reversed

what is image compression?

process which changes the digital image in order to use fewer bits to store and transmit info

what is run-length encoding

tells how many 0's and 1's instead of the full code and no information is lost