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Q. Calculations for a standard VGA graphics screen?
Let's do the calculations for a standard VGA graphics screen (640×480) using 16 colours.
Total number of Pixels = 640 ×480 = 307200
Colour Depth (16-colours) = 4 bits
Total minimum Memory = 1,228,800 bits
Total minimum memory (in bytes) = 153,600 bytes
153 KB
Minimum Video RAM required and available = 256 KB.
So 16-colour VGA requires at least 153,600 bytes of memory however memory is only available in exponential powers of 2 therefore next highest available memory is = 256 KB.
Subtract the given number using 1's complement 11011 - 11001 Ans. 11011 - 11001 = X - Y X = 11011 1's complement of Y = 00110
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Q. Make a generalize program that performs r-ary subtraction on two numbers using (r-1)'s and r's complement? Use input and output files.
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