Units of storage Flashcards
What does a computer store and process data as?
Binary (1’s & 0’s)
Why is data stored as binary?
It’s simpler & more cost effective to design components that recognize only two states on or off
List the data units in order if smallwst to biggest
Bit
Nibble
Byte
Kilobyte
Megabyte
Gigabyte
Terabyte
Petabyte
How do you calculate the text file size?
Bits per character x Num of characters
How do you calculate the audio file size?
Sample rate x Duration x Bit depth
What is ment by sample rate?
Number of samples per second
What is meant by duration when finding the audio file size?
Length in number of seconds
What is meant by bit depth when finding audio file size?
Number of bits needed to store each sample
How do you calculate image size?
Height x Width x Colour depth
What is meant by ‘hight’ when calculating the image size?
Image height in pixels
What is meant by ‘width’ when calculating image size?
Image width in pixels
What is ment by ‘colour depth’ when calculating image size?
Number of bits needed to store each pixel
