Question

A digital camera uses a _ to capture light from the output phosphor on an image intensifier.

1. closed circuit digital
2. contrast control device
3. charge coupled device
4. cold cathode device

Answer 1

A digital camera utilizes a charge-coupled device (CCD) to capture and convert light into electronic signals, with each pixel detecting light intensity and color filters adding color.

Step-by-step explanation:

A digital camera captures light from the output phosphor on an image intensifier using a charge-coupled device (CCD). CCDs are semiconductor chips that convert light into electronic signals, which can then be processed and stored. Each pixel on the CCD detects the intensity of light and color is added through red, green, and blue filters. CCDs are not only used in digital cameras but are also critical in various forms of imaging technology such as video camcorders and astronomical detectors. These devices count and store the charged particles (electrons) generated by photons of light during exposure.