Long before the introduction of those little cardboard, blue-eye, red-eye 3D glasses, Americans knew how to create three dimensional entertainment. They used hand-held devices – precursors to ...

I am back to the point of building another computer due to aging of the older model. I'm amazed at the sorry state of sound cards for the PC. In my old computer the sound card handled a DVD, CD, CDRW, ...

The circuit is aimed to build a computer sound card with input line in order to use a two mono stereo microphone. TLC272 – a precision dual operational amplifier with low offset voltage drift, low ...

Joshua Heineman is obsessed with old stereo cards, those old photographs from the 19th century that contained two different views of the same subject to give the illusion of depth. He converts them ...

Dear John: I have attached photos of a viewer - we cannot remember what it is called - that has been in our family for at least 90 years. Can you tell us the name of the thing and what the value might ...