Yes, more than half of us (personal prediction) will be using tablet computers in two years. The best known tablet computer is the iPad. University Business magazine's Tim Goral reviews tablets: What they are, where they are, and so forth, in an article that you should read if you want to be sure that you fully understand the phenomenon:

What makes it different? First, it isn’t a computer in the traditional sense. That is, it’s not like a laptop with command-line capabilities that can be tweaked and modified to your liking. The iPad’s closed environment device doesn’t invite tinkering. It uses a flash drive, rather than a conventional hard drive; combined with new, lighter battery technology, that brings the weight down to about 1.5 pounds. A touch-screen interface eliminates the need for a stylus, and if you need a keyboard, a near full-sized virtual keyboard appears at the touch of an icon. And at just a half-inch thick, it is easy to carry anywhere.

“Our office of information technology surveys students regularly and has found that while 90 percent of students own laptops, they don’t often bring them to class,” says Ernst. “They generally don’t want to lug them around. The iPads seem to fit a whole different niche. There are huge advantages in weight, ease of use, and instant access. Just push the home button and it’s instantly on.”