1.4) Organisation And Structure Of Data Flashcards
What is bit?
Either 1 or 0.
Can sound be sampled and stored digitally?
Yes.
What is the sample rate?
Number of audio samples captured every second.
What is bit depth?
Number of bits available for each clip.
What is bit rate?
Number of bits used per second of audio.
What does ‘metadata’ refer to?
‘Data about data’. Key properties that are needed to display image correctly as stored as metadata. Data such as image’s height, width + colour depth.
What can a character be?
Letter, digit, space, punctuation mark or various other symbols.
What is unicode?
Standard character set that has combined + replaced many others. Originally extension to ASCII character set + contains many characters used around the world.
What are the data types?
Integer. Real. Boolean. Character. String.
What is an integer?
Whole numbers, positive or negative.
What is the ‘real’ data type?
Numbers, including fractions or decimal points.
What is the boolean data type?
True or false.
What is the string data type?
Sequence of characters.
What is a list?
Data structure that has data items stored in order originally added to memory. If list made up of set number of data items. If list can very in number of data items then it is a dynamic data structure.
What is an array?
Data structure that can hold fixed number of data items, which must be of same data type e.g. real. Integer, string etc.
