Units of Data Storage (OCR GCSE Computer Science): Flashcards
📚Flashcards
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14 cards from this deck
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Practise the cards
14 cards from this deck
Binary system - how many symbols?
Binary system - how many symbols?
Two symbols: 0 and 1
Bit
Bit
Smallest unit of data; a single 0 or 1
Nibble size in bits
Nibble size in bits
4 bits
Byte size in bits
Byte size in bits
8 bits
1 Kilobyte (KB) in bytes
1 Kilobyte (KB) in bytes
1,024 bytes
1 Megabyte (MB) in KB
1 Megabyte (MB) in KB
1,024 KB
1 Gigabyte (GB) in MB
1 Gigabyte (GB) in MB
1,024 MB
1 Terabyte (TB) in GB
1 Terabyte (TB) in GB
1,024 GB
Sound file size formula
Sound file size formula
sample rate × duration × bit depth
Image file size formula
Image file size formula
colour depth × height × width
Text file size formula
Text file size formula
bits per character × number of characters
Why computers use binary
Why computers use binary
They only understand machine code (0s and 1s)
Conversion factor for data units
Conversion factor for data units
1,024
Metadata
Metadata
Extra information about data stored