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AP CSP Unit 2
| Term | Definition |
|---|---|
| Heuristic | a problem solving approach (algorithm) to find a satisfactory solution where finding an optimal or exact solution is impractical or impossible. |
| Lossless Compression | a data compression algorithm that allows the original data to be perfectly reconstructed from the compressed data. |
| Image | A type of data used for graphics or pictures |
| Metadata | Data that describes other data. For example, a digital image may include metadata that describe the size of the image, number of colors, or resolution. |
| Pixel | Short for "picture element" it is the fundamental unit of a digital image, typically a tiny square or dot which contains a single point of color of a larger image. |
| Hexadecimal Number System | A number system consisting of 16 distinct symbols — 0-9 and A-F — which can occur in each place value. |
| Lossless: | A compression scheme in which every bit of the original data can be recovered from the compressed file. |
| Lossy | A compression scheme in which “useless” or less-than-totally-necessary information is thrown out in order to reduce the size of the data. The eliminated data is unrecoverable. |
| Abstraction | Removing unnecessary details to focus on the essential characteristics. To break problems up into separate parts which can then be solved separately and recombined to form a complete solution. |
Created by:
Dawn Cabrera
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