It was his vision of a computer and a communications based working environment along with the invention of key tools and systems that help to start the personal computer revolution.
(It; was; his vision of a computer and a communications based working environment) (key tools and systems; help; to start the personal computer revolution) Context(key tools and systems help,List([107, 138))):(key tools and systems; help to start; the personal computer revolution)
key tools and systems help,List([107, 138))
It key tools and systems key tools and systems
was help help to start
his vision of a computer and a communications based working environment
to start the personal computer revolution
the personal computer revolution