These fascinating devices display numerals using glow-discharge tubes. Each tube contains a wire mesh cathode and multiple anodes shaped like numerals zero through nine. Applying voltage to a specific anode ionizes the gas within the tube, causing the corresponding numeral-shaped anode to glow. A classic example is the Burroughs B7000, known for its distinctive numerical displays.
Beyond their striking visual appeal, these instruments offer a glimpse into the history of computing. They represent a bridge between mechanical calculators and modern digital displays, showcasing an era of technological innovation. The warm, amber glow of these tubes evokes a sense of nostalgia and craftsmanship, contrasting sharply with contemporary LED or LCD screens. This distinct aesthetic makes them highly collectible and sought after by enthusiasts.
