File size calculation
What File size calculation means in Computer Science GCSE, as defined for OCR, Pearson Edexcel.
Definitions of File size calculation
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Reference: OCR
Uncompressed file size in bits is calculated as width × height × colour depth, then divided by 8 for bytes and by 1000 for kB and MB.
The number of pixels multiplied by the colour depth gives the file size in bits; divide by 8 to convert bits to bytes.
Topics that use File size calculation
- Data storage (OCR GCSE)
- Data representation (Pearson Edexcel GCSE)
Related terms
- Bit depth
- Colour depth
- Overflow
- Resolution
- Sample rate
- Analogue to digital conversion
- Base 16 place value
- Character set
Using File size calculation in the exam
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