bits per inch


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bits per inch

(unit)
(BPI) A measure of the recording density of a magnetic tape or disk.
References in periodicals archive ?
The drive offers high track density of 14,900 tracks per inch (TPI) and a high recording density of 241,000 bits per inch (BPI).
The Optical Data System -- a low-cost data storage system that provides write-erase-write cycles of 10 million times, stores the equivalent of 50 magnetic tapes recorded at 1,600 bits per inch.
In the 5-gigabit demonstration, bits were stored at a linear density of 240,000 bits per inch along concentric tracks packed at 21,000 per radial inch.