
2 Chapter 1
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information. This information may be computer fi les but it can also be digital
photographs, home videos, movies, music, and other personal and commercial content.
The content is what makes these devices useful, and digital storage is where the content
resides.
Electronic memory may be temporary as is the case for volatile memory, where the
information it contains disappears when the power is turned off, or it may be long term
memory, or nonvolatile memory. Memory may be fast or slow, low power consumption
or high power consumption and it may be inexpensive per byte or expensive. It may be
part of the microprocessor ...