AP CSP Course

• Bit: A contraction of "Binary Digit";  the single unit of information in a computer, typically represented as a 0 or 1

• Byte:  8 bits

• Overflow Error: Error from attempting to represent a number that is too large.

• Round-off Error: Error from attempting to represent a number that is too precise. The value is rounded.

• Analog Data: Data with values that change continuously, or smoothly, over time. Some examples of analog data include music, colors of a painting, or position of a sprinter during a race.

• Digital Data: Data that changes discretely through a finite set of possible values

• Sampling: A process for creating a digital representation of analog data by measuring the analog data at regular intervals called samples.

• Lossless Compression: A process for reducing the number of bits needed to represent something without losing any information. This process is reversible.

Lossy Compression: A process for reducing the number of bits needed to represent something in which some information is lost or thrown away. This process is not reversible. 

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