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A big jump in digital memory is with portable flash memory. Flash memory is read-only memory stored in a chip that doesn't need power to hold the data in the memory. This makes flash memory ideal for portable applications, like MP3 players, digital cameras and cell phones. Flash memory doesn't hold nearly as much data as a portable hard drive, but it's also much sturdier and able to handle much rougher treatment. Examples of flash memory-based products are the iPod Shuffle and the new USB jump external drives, which allow you to easily move data to and from any computer with a USB port.
Bottom line: Flash memory is great for portable items like MP3 players, cell phones, jump drives or anything that might take an accidental pounding and doesn't require big capacity.