Personal Dynamic media

In the article Personal Dynamic Media the author talks about one day having a computer that is as small as a n actual notebook. That also have several features like  music storage , letter storage, and other features. The author says he imagines a notebook that can put out and receive information. He says the first attempt to crate this  kind of note book was in 1967-1969. However from the picture that I saw of it it looked nothing like a notebook. I always wondered why computers use to big so big. I glad over time they have gotten small. Even though he is talking about a notebook type of computer being created now days it seems like he is basically describing  and i-pad. In the conclusion the author ask what would happen in a world where everyone had their own dynabook? I couldn't imagine the world with out computers it's like what would I do in a world with out them.