MOBIDIC, for mobile digital computer, was part of a pioneering effort by the US Army Signal Corps to computerize the distribution of intelligence around the battlefield, known as Fieldata. Fieldata (6 bit code) standardized the character format, electrical signals and other details, allowing standardized computers to be built by many companies. MOBIDIC computers, built by Sylvania, were housed in two large tractor-trailer trucks, and demanded reliability that tube-based machines of the era simpl… (More on Mobidic)