Even the biggest, heaviest laptop I own—a 17-inch workstation monster— can still easily fit in a backpack with enough room left for snacks. But over the course of portable computing history, there have been some computers that really stretch the definition of “mobile”. So I wondered what the porkiest laptops (or computers meant to travel with you) were, and this is the list of impractical PCs I found. 9 The Osborne 1 (1981)—the First “Portable” Computer Widely considered th...