In a few museums around the world, there lies the special experience of seeing some of the earliest computers. These room-filling monsters have multiple racks of vacuum tubes that are kept working by ...

The computer ENIAC with two operators. ENIAC is the world's first electronic computer. As a stand-alone device, it didn't support networking, although it facilitated a network of humans who used it ...

Before transistors or microchips, the earliest computers relied on vacuum tubes — glass bulbs that glowed like small light bulbs and acted as electronic switches. Each tube could represent a one or ...