While working at the General Electric Research Laboratory, in 1953 Rosen co-authored one of the first textbooks on transistor circuits.

[2] In 1956, Rosen received a Ph.D. in electrical engineering from Syracuse University (with a minor in solid state physics).

[3] In 1957, Rosen joined the Stanford Research Institute, where he did much of his artificial intelligence work.

[1] In 1959, Rosen co-founded Ridge Vineyards with SRI colleagues Hewitt Crane and David Bennion.

[4] In 1978, Rosen co-founded Machine Intelligence Corporation (MIC) with colleagues from SRI and elsewhere.