Unit 1 Digital Information

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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 nuber 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 finite set of possible values.

Digital Data

Data that changes discretely ghrough 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 inforation. This process is reversible.

Lossy Compression

A process for reducing the nuber of bits needed to represent something inwhich some information is lot or thrown away. This process is not reversible.

Binary

A way of representing information usning only two options.

Creative Commons

A collection of public copyright licenses that enable the free distribution of an otherwise copyright work, used when an author wants to give people the right to share, use, and build upon a work that they have created.

Data Compression

A process for reducing the number of bits needed to represent a piece of information.

Decimal

A system for representing numbers using combinations of the digits 0-9.

Inellectual Property

A work or 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, tradmark, etc.

Open Access

online research output free of any and all restrictions on access and free of many restrictions on use, such as copyright or license restrictions.

Open Source

programs that are made freely available and may be redistributed and modified.