(1) (
Direct
Connect
Architecture) AMD's 64-bit architecture. See
AMD64.
(2) (
Document
Content
Architecture) Earlier IBM file formats for text documents. DCA/RFT (Revisable-Form Text) was the primary format and could be edited. DCA/FFT (Final-Form Text) was formatted for a particular output device and could not be changed. For example, page numbers, headers and footers were placed on every page. DCA gave way to Adobe's PDF format (see
PDF).
(3) (
Distributed
Communications
Architecture) A proprietary set of rules from Unisys that creates and maintains an end-to-end communications path between computing systems and their applications.
(4) (
Digital
Communications
Associates, Inc., Alpharetta, GA) A manufacturer of communications products, known for its "IRMA board." In late 1994, DCA became part of Attachmate Corporation of Seattle, Washington. See
IRMA board.