COMPUTER ARCHITECTURE
SECONDARY STORAGE DEVICES
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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An image is 20 by 50 pixels. The image uses 4 bit(s)/0.5 byte(s) per pixel. How much storage in bytes would this take up? (Including overheads)
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550
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55
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5500
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55000
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Explanation:
Detailed explanation-1: -Per this definition, one kilo is 1000. However binary units were used for memory sizes, powers of 2, where one kilobyte is 1024 bytes, and a one megabyte is 1024x1024 = 1, 048, 576 bytes, or 220. So a number like 10 million bytes is 10, 000, 000 / (1024x1024) = 9.54 megabytes.
Detailed explanation-2: -For example, a single 512×512, 8-bit image requires 2, 097, 152 bits for storage.
Detailed explanation-3: -Multiply the width and height of the image, in pixels, to get the total pixel count. Multiply the total pixel count by 3 to get the image size in bytes. Divide the number of bytes by 1024 to get the image size in kilobytes. More items
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