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 ...

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 ...

A popular accessory in the eight-bit microcomputing era, the light pen as a product dates back ... pixels - blue being chosen to minimise the image disruption perceived by the human eye.