The Osbourne was the first portable computer, with a built-in keyboard, monitor, and power supply. It has a 4mhz processor, and 64k ram. This is an Osbourne 1(rev 1.43), it seems to function fine, but there's no boot disk, so testing remains to be done.
The Kaypro series eventually superseded the Osbournes, and took over the portable computer market. This is a Kaypro II on boot screen, waiting for a boot disk.
Here is the Kaypro II again folded up.
Damn, these are old, clunky, and slow. Especially compared to modern laptops and computers.