AP CS Principles Unit 4 Vocab

analog data

values that change smoothly, rather than in discrete intervals, over time

sampling technique

a technique used to measure the values of the analog signal at regular intervals called samples

data compression

a method designed to reduce the size (number of bits) of transmitted or stored data

lossless data compression

compression that has occurred that can reduce the number of bits stored or transmitted while guaranteeing complete reconstruction of the original data

lossy data compression

compression that has occurred that can significantly reduce the number of bits stored or transmitted but only allow reconstruction of an approximation of the original data

Creative Commons

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open source

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

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