I was just wondering what his name is...
There is a patron saint of computers, his name is Isidore:
http://www.catholic-saints.info/patron-saints/patron-saint-of-computers.htm
The Greek god of math could also be concerned as well, his name is Hermes Trismegistus.
But as far as the role of "God of Computers" is concerned, nobody seems to fill it directly. I just guess we can say "the God of computers" without using a particular name.
Or should we make one up?
What you people think?