Visual information from the camera was translated into pulses that reached his tongue.

They also emit a signal every 15 minutes which is turned into audio pulses by a separate bit of kit.

With hand held lamps, a concave mirror is tilted by a trigger to focus the light into pulses.

Telephone calls can be converted into pulses of laser light that are sent over the cables.

They are transmitted over standard phone lines where the receiving machine reconverts the tones into digital pulses and prints a copy of the document.

To make the conversion, G.M. chopped the direct current into pulses.

The light is chopped into pulses, kind of like Morse code, with the light on for longer or shorter periods of time.

These lasers convert electrical signals from telephones, video equipment and computers into pulses of light.

This is because the power is packed into shorter but more intense pulses.

One is the control box, which turns the output from the amplifier into digital light pulses.