1
Q
bit
A
A binary digit, either 0 or 1.
2
Q
roundoff
A
Error that results when the number of bits is not enough to represent the number with full precision (like using 3 digits to represent π pi as 3.14).
3
Q
analog data
A
Values that change smoothly, rather than in discrete intervals, over time. For example, the pitch and volume of a live concert.
4
Q
lossless
A
Compressing data in a way that preserves all data away and allows full recovery of the original.
5
Q
lossy
A
Compressing data in a way that discards some data and makes it impossible to recover the original.
6
Q
metadata
A
Data about data, like descriptive information about a file or a row in a database.
