Film is rearranged metal particles on tape which are read by an electromagnet. CDs are discs with burned pits in them which are read by a laser. What makes one analog and one digital?
In: Technology
CDs are digital because the data is stored in a discrete fashion: binary, 1 or 0. Film is stored in an analog fashion because the data is recorded as a gradient (of brightness, color, etc), so it isn’t discrete.
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