Light pens were a popular accessory in the 8-bit computing days, offering a relatively inexpensive pointing device that gave your ... as it passed the end of the pen, but the Vectrex with its ...

Light pen - A light pen is an input device that utilizes a light-sensitive detector to select objects on a display screen. A light pen is similar to a mouse, except that with a light pen the pointer ...

Light pens were a popular accessory in the 8-bit computing days, offering a relatively inexpensive pointing device that gave your ... as it passed the end of the pen, but the Vectrex with its ...

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.

Head Tracking Device A head pointing system, which provides full mouse control of computers to persons, who cannot use their hands but who have good head control. Moving one's head moves the cursor on ...