A look back at the sales training for Radio Shack's Model 100, a groundbreaking early laptop

When Radio Shack released the Model 100 in 1983, it was a breakthrough for portable computing: an AA-battery-powered laptop that you could fit in a briefcase, with a built-in modem and an instant-on Microsoft OS that contained the last production code Bill Gates ever wrote himself. Read the rest

The first "portable" computer fit in two trailer vans and weighed 20 tons

The first electromechanical computers occupied whole buildings, making them rather unwieldy; in the 1950s, an effort to create a "portable" computer called the DYSEAC bore fruit in the form of a computer on wheels that could be relocated, provided you had the trucking logistics to move two trailers with a combined weight of 20 tons. Read the rest