usim

from The Free On-line Dictionary of Computing (8 July 2008)

usim

   A {Motorola} {6809} simulator.  Version 0.11 by Ray P. Bellis
   <[email protected]>.

   (ftp://ftp.cns.ox.ac.uk/pub/mc6809/).

   (1993-02-14)

from V.E.R.A. -- Virtual Entity of Relevant Acronyms (June 2006)

USIM
       Universal Subscriber Identity Module (mobile-systems, UMTS)

[email protected]