The concept of technological opportunity is examined and the following three categories of technological opportunity sources are discussed: (1) advances in scientific understanding and technique which expand the pool of technological opportunities, (2) technological advances that originate in...

In this article, we present a history-friendly model of the changing vertical scope of computer firms during the evolution of the computer and semiconductor industries. The model is ldquo;history-friendly,rdquo; in that it attempts at replicating some basic, stylized qualitative features of the...