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15 cards from this deck
Tiny squares called pixels
Width × height in pixels
width×height\text{width} \times \text{height}width×height
How many pixels packed into a given physical space
How many different colours each pixel can display
2number of bits2^{\text{number of bits}}2number of bits
2 colours
256 colours
65,536 colours
4 colours
Sharper, more detailed, larger file size
width×height×colour depth8\frac{\text{width} \times \text{height} \times \text{colour depth}}{8}8width×height×colour depth
To convert bits to bytes (8 bits = 1 byte)
File size increases (more bits per pixel needed)
15,000 bytes (or about 15 KB)
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