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Questions and Answers List

Question	Answer
How do you calculate Text file size?	Bits per character x Number of characters
How do you calculate Image file size?	Colour depth x Image height x Image width
How do you calculate Sound file size?	Sample rate x Duration in seconds x Bit depth
The term px means what?	Pixels
How do you work out how many of something you can have on a computer. (Use a document as an example to answer)	Capacity of the Drive/ Document size
What are the two (2) diffrent ways of storing images?	Bit Map and Vectors
What is a Bit Map?	Images that are made up of diffrent colour squares Each square has a binary value
What is a Vector?	The mathematical way to store squares.
Finish the sentence: The number of ____ (4 letters) required depends on the number of ______ (6 letters) required.	bits and colour
How do you calculate the number of colour	2^n
Finish the sentence: The greater the colour depth and __________ (10 letters), the larger the _____ (5 letters) size	resolution and image
What does Sample Rate mean?	Sample rate is how often you record the amplitude of a sound wave
What does Bit Depth mean?	Bit depth is how many diffrent gradations of amplitude that can be represented in a digital wave form
How do you calculate Sound File Size?	Number of samples per second x Number of bits per second x Length of samples in seconds