Pacific Cyber/Metrix

Pacific Cyber/Metrix, Inc. (PC/M; originally PCM, Inc., later PCM Systems) was an American computer company based in California. The company was founded in 1975 in San Ramon, California.

A privately held company, PC/M was founded by Robert Nelson and several others, most of whom including Nelson came from the San Ramon facility of Edgerton, Germeshausen, and Grier, a scientific research firm. Nelson was named president and general owner. For the next several years the company developed microcomputers based around the PDP-8–compatible Intersil 6100 as well as CMOS EPROM burners. The company earned profit from the cash flow generated by their products and received no outside venture capital. PC/M moved its headquarters in late 1979 to Dublin, California, where the company spent the remainder of its existence in a 6,000-square-foot facility. The company's workforce was relatively spartan throughout its lifespan, employing only "about 10" in 1979, later increasing to 15 by the early 2000s.