1.2.3 - Units
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Why do computers use binary to represent data?
A computer is built of switches, either: on and off, which correspond to 1 and 0. (base 2)
What are the standard units of data storage, from smallest to largest?
Bit, Nibble (4 bits), Byte (8 bits), Kilobyte (KB), Megabyte (MB), Gigabyte (GB), Terabyte (TB), Petabyte (PB).
How do you convert between different units of data storage?
4 bits = 1 nibble, 8 bits = 1 byte, 1,000 bytes = 1 kilobyte (KB), 1,000 kilobytes = 1 megabyte (MB), 1,000 megabytes = 1 gigabyte (GB), 1,000 gigabytes = 1 terabyte (TB), 1,000 terabytes = 1 petabyte (PB).
How do you calculate the file size of a sound recording?
Sound file size = Sample Rate × Duration (s) × Bit Depth
How do you calculate the file size of an image?
Image file size = Colour Depth × Image Width (px) × Image Height (px)
How do you calculate the file size of a text document?
Text file size = Number of Characters × Bits per Character