I actually used a Compaq portable in the summer of 1984. I had a summer job at a place that had one. It was kind of mind bending to have a reasonably powerful computer that you could carry around. "Carry" had not previously been a verb one associated with computers, any more than one does now with, say, desks.
In case you wondered what those 2 inch floppies looked like:
<a href="http://www.retrothing.com/2006/05/oddball_micros_.html" rel="nofollow">http://www.retrothing.com/2006/05/oddball_micros_.html</a>