Its great that we can review and value the contributions these pioneers made to our contemporary electronic lives.
Some remember a book called the Third Wave. Perhaps Steven Jobs and his peers were the leading edge of that third wave.
Like Newton, John Harrison, James Watt, Brunel, Faraday, Tesla, Otto, A.G.Bell, etc. all new technology has visionaries and innovators.
Jobs is special, he remained a leader of IT innovation for nearly four decades. Sinclair and others were significant early innovators, but nobody has remained such a powerful force in one field of innovation for that long.
He had his failures, but I hope history will treat him well.
We should remember John Harrison too at this time. He was also a life long pioneer and innovator whose time keeping innovation and influence on navigation spans 300 years to the current GPS system.
Of course without an accurate CPU clock our personal computers, mobile phones etc., would also not work!
Dava Sobel's book "Longitude" is a great read:
http://en.wikipedia.org/wiki/Longitude_%28book%29