A light-sensitive stylus wired to a video terminal used to draw pictures or select menu options. The user brings the pen to the desired point on screen and presses the pen button to make contact.

It allows him to make engineering drawings with a light pen. A typical minicomputer costs ... three now common computer applications. Gordon Moore and Robert Noyce found Intel in 1968.

Sometimes the simplest of projects end up revealing the most interesting of things, as for example is the case with [Ryo Mukai]’s light pen for the Vectrex console. It’s an extremely simple ...