The history of laptops describes the efforts in the 1970s and 1980s to build small, portable personal computers that combine the components, inputs, outputs and capabilities of a desktop computer in a small chassis. Before laptop/notebook computers were technically feasible, similar ideas had been proposed, most notably Alan Kay’s Dynabook concept, developed at Xerox PARC. My new book The Sartorialist: Closer is almost ready to ship, so I wanted to…