1.2.3 Units Flashcards
Why does data need to be stored as binary? (1)
Computers can only understand binary (1)
How do you calculate the size of a sound file? (3)
Sample rate (1) x duration in seconds (1) x bit depth (1)
How do you calculate the size of an image file? (3)
Colour depth (1) x image height in pixels (1) x image width in pixels (1)
How do you calculate the size of a text file? (2)
Bits per character (1) x number of characters (1)
What are the units of file sizes, smallest to largest? (8)
Bit Nibble Byte Kilobyte Megabyte Gigabyte Terabyte Petabyte
How many bits in a byte? (1)
8
How many bits in a nibble? (1)
4
How do you convert from a unit of file size to a larger unit?
Divide by 1000 per step (unless it’s nibbles or bits to byte)
How do you convert from a unit of file size to a smaller unit?
Multiply by 1000 per step (unless it’s bytes to nibble / bit)