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bit density[′bit ′den·səd·ē]
Number of bits which can be placed, per unit length, area, or volume, on a storage medium; for example, bits per inch of magnetic tape. Also known as record density.
bit densityThe number of bits that can be stored within a given physical area. See bpi.
|A Memory Bit|
|This is one storage cell in an earlier 16-megabit DRAM memory chip. Although minuscule in overall capacity compared to today's memory, there were 16,777,216 of these cells in the chip, which was only a quarter of an inch square. (Image courtesy of IBM.)|