It is truly amazing to see how many ideas that these writers invented, that have been invented as products later on by others.Such as?
The current pace of technology has caused something of a crisis in "hard" SF - you really can't make it up anymore before someone is already doing it. It was only about a decade between Gibson's Neuromancer and the Internet that made it seem dated. It's gotten worse since.
Well, Dr. Bova has a short list on his site:
http://www.benbova.com/predict.htm
There are many others. Right off the top of my head, Isaac Asimov predicted quite a bit of the technology of robotics, some of which is just now being actually achieved.