Digital Communication Associates, Inc. (DCA), was a company in the computer and telecommunications industry, located in Alpharetta, Georgia, United States.

Digital Communications Associates was founded by John Alderman, who led the company until 1981, when he was replaced by Bertil Nordin.

It defines a standard, high-level programming interface for data communications applications.

[3][4] In 1981, under the leadership of Bertil Nordin, DCA acquired Technical Analysis Corporation (TAC), the makers of the IRMA Board which enabled PCs to function as 3270 terminals to an IBM mainframe host.

[6] In 1991, DCA acquired Cincinnati-based InterComputer Communications Corporation (ICC), makers of the INFOConnect line of terminal emulation and file-transfer products (focused on the Unisys ecosystem), OpenMind (collaboration) and RLN (remote lan node) In 1992, DCA acquired Westborough-based Avatar Technologies, makers of the Mac Mainframe hardware and software 3270 emulators, for $8 million.