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.

That’s the question [Kathy] asked when she built this LED matrix light pen project. It looks simple enough – a 64-LED matrix illuminates as the pen draws shapes. But how does the circuit ...

The film showcases the innovative work of engineers at Bell Telephone Laboratories as they explore computer graphics and its applications in designing electronic circuits. Using a device called ...

It allows him to make engineering drawings with a light pen. A typical minicomputer costs about $20,000. 1965: An IC that cost $1000 in 1959 now costs less than $10. Gordon Moore predicts that the ...

Buying the right camera, lens, accessory or software to suit your photography is really important. Our product reviews offer independent views with hands-on opinion and honest verdicts aimed to ...

The E-PL6 updates the E-PL5, and is equipped with ISO LOW (equivalent to 100) mode for enjoyable defocusing effects, as well as new functions such as Interval Shooting, and Time-lapse Movie.

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 ...