What is the abbreviation for Uniplex information computing system?

Looking for the shorthand of Uniplex information computing system or how to abbreviate it? We have 5 shorthands for Uniplex information computing system.

UNIX — Uniplexed Information and Computing System
UNIX — Uniplex Information and Computing System
UNICS — Uniplexed Information and Computer System
UNICS — Uniplex Information and Computing System
UNICS — Uniplexed Information and Computing System