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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.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.
bit densityThe number of binary digits (bits) that can be stored within a given memory or storage area. See bit and bpi.
|One Memory Cell|
|This is one bit in an early 16MB dynamic RAM (DRAM) chip. Although a thousand times less dense compared to today, there were nevertheless 16,777,216 cells in the quarter-inch-square chip. (Image courtesy of IBM.)|
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