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 ?
Technically, the question will be how many exponential jumps in bits per inch (BPI) can metal particulate (MP) tape coating technology support.
To increase the track and recording density (capacity for data measured in bits per inch) of magnetic tape, smaller, more powerful magnetic particles must be used in a tape's magnetic coating.
* The first tape drives implemented a 7-track recording format on an eight-inch diameter reel and had a linear recording density of 100 bits per inch and had a capacity of 1MB or the equivalent of 12,500 punched cards.