Applied Digital Data Systems, Inc. (ADDS), was a supplier of video display computer terminals, founded in 1969 by Leeam Lowin and William J.
[1][2] Lowin simultaneously founded Solid State Data Sciences (SSDS).
[1] It became a subsidiary of NCR Corporation in 1980, which sold the Mentor 2000 professional computer in the United States in 1986.
The Mentor 2000 ran at 5 MHz using a Zilog processor, 640 KB RAM, and included one 60MB hard disk.
ADDS (along with NCR) was later part of AT&T,[3] then independent briefly before being acquired by SunRiver Data Systems.