Exam code: 1CP2
The number of bits determines the number of patterns that can be represented.
The address bus of a computer is 8‑bits wide.
State the number of unique addresses that can be accessed.
Construct an expression to convert 40 681 930 227 712 bytes to tebibytes.
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Describe one effect of using lossy compression to reduce the size of a file.
Data storage is measured in bits and bytes.
A file format uses a 100 format('truetype')%3Bfont-weight%3Anormal%3Bfont-style%3Anormal%3B%7D%3C%2Fstyle%3E%3C%2Fdefs%3E%3Ctext%20font-family%3D%22math13b8a614226a953a8cd9526fca6%22%20font-size%3D%2216%22%20text-anchor%3D%22middle%22%20x%3D%228.5%22%20y%3D%2216%22%3E%26%23xD7%3B%3C%2Ftext%3E%3C%2Fsvg%3E){kind=small}
600 table of 32‑bit integers.
The file uses 1 kibibyte of additional data.
Construct an expression to show the number of bytes of storage needed to store the file.
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After applying compression to a file, the original contents cannot be reconstructed fully.
State the type of compression used on the file.
A 10-colour bitmap image uses 15-bit colour depth. The image is 1028 pixels wide and 640 pixels high.
Complete the expression to show the minimum file size for the image in MiB.
You do not have to do the calculation.
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