AP Computer Science - Unit 1

Binary

A way of representing information using only two options.

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 includes music, colors of a painting, or the 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 of reducing the number of bits needed to represent something in which some information is lost or thrown away. This process is irreversible.

Intellectual Property

A work of invention that is the result of creativity such as a piece of writing or a design, to which one has rights and for which one may apply for a patent, copyright, trademark, etc.

Creative Commons

A collection of public copyright licenses that enable the free distribution of an otherwise copyrighted work, used when an author wasn't to give people the right to share, use, and build upon a work that they have created.