rcs

As a noun initialism

is a term formed from the initial letter or letters of several words or parts of words, but which is itself pronounced letter by letter.

As an initialism rcs is

(computing) revision]] [[control system|control system.

Rcs is a see also of sps.

As initialisms the difference between rcs and sps

is that rcs is (computing) revision]] [[control system|control system while sps is (us|space science|rocketry) service propulsion system.