BPI

from WordNet (r) 3.0 (2006)
bpi
    n 1: a measure of how densely information is packed on a storage
         medium [syn: {bits per inch}, {bpi}]
    
from The Free On-line Dictionary of Computing (8 July 2008)
bits per inch
BPI

   <unit> (BPI) A measure of the recording density of a {magnetic
   tape} or {disk}.

   (1995-04-13)
    
from V.E.R.A. -- Virtual Entity of Relevant Acronyms (June 2006)
BPI
       Bits Per Inch (HDD, BIT)
       
    

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