The video memory has the capacity to store a 640 x 480 4-color image. What size image can be stored in the same video memory if you use a 256-color palette?
Each 4-color dot occupies 2 data bits.
An image with a resolution of 640×480 contains 307200 pixels.
This means that the entire image takes 307200 * 2 = 614400 bits of video memory.
Each 256-color dot takes up 8 data bits.
This means that the maximum image size will be 614400/256 = 2400 pixels.
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