To build a computer controlled musical Christmas lights display, you need to hook up your computer to a micro-controller, that is attached to the circuit of lights. For simplicity, Arduino is recommended for building this display.
all other lights on car work ,just no dash lights,could it be a fuse?
Laser lights are spectrally pure, i.e. one wavelength, and they are coherent, i.e. all phota in phase. As a result, the beam of a laser light tends to stay as beam, and not diverge due to scattering.
A match is a small wooden stick with a special head that lights when struck against a specific surface. Match flames can reach between 1,100 and 1,500 degrees Fahrenheit.
Are you talking about lights under the keyboard? If so, there should be a button up in the function keys (F1, F2, F3, etc.) that looks like a pentagon with little lines popping up. On my Dell, it's on the F6 key. If you press it, you can toggle the lights between high, low, and none. If it doesn't work, open Windows Mobility Center (search it in the start menu if you don't know where it is) and under the part that says 'Customized by Dell', you can toggle it manually.