My First Portable? Computer

Some buildings are portable, if you have access to a Freightliner. Stonehenge is a portable sun dial, if you have enough people on hand to get things rolling. And in 1989, Apple offered a "portable" Macintosh--a 4-inch-thick, 16-pound beast that severely strained the definition of "laptop"--and the aching backs of its porters.

Huge lead-acid batteries contributed to its weight and bulk; the batteries were especially important because Portable wouldn't run on AC power. Some computers are affordable, too; the Portable met that description only if you had $6500 of extra cash on hand.