Users typically have three kinds of keyboards to choose from, depending on the switch type: mechanical, magnetic (Hall effect ...

Optical character recognition (OCR) scanners read handwritten, typed, or printed text from paper and translate the data into a format that can be manipulated by computers. Optical character ...

An all-optical fiber-optic switching device that maintains the signal as light from input to output. Traditional switches that connect optical fiber lines are electro-optic. They convert photons ...

A device called an all-optical switch could instead use light ... which would produce an output signal when one light input ...