Charles Babbage lives longer. Look up "The Difference Engine", by William Gibson and Bruce Sterling.
Julius Edgar Lilienfeld publishes his findings about the transistor shortly after he files the patents for them.
I guess that more than the earlier development of digital technology (earlier transistors, teletype networks and radio control technology) it would be necessary increase the *need* for it: that people feel the need for faster data processing and more connected communication systems, at least at work...