Information theory is the scientific study of quantification, storage, and communication of information, like memory.
How people create data using numbers and store them
Information systems is a organizational system designed to collect, process, store, and distribute information.
Numbers and letters in data always represent something. They are a discrete piece of data.
Analog signal is like a wave, its any continuous signal. Its like books, vhs tapes, or cassette tapes. You have to go from the beginning to the end. It doesnt happen in slices. Digital data, you can just skip throught playlists or movies, or go to whatever time mark you want.
Continuous function has no abrupt changes.
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