Charged Coupled Device

Charge-coupled device (CCD) refers to a device that consists of a series of light-sensitive capacitor connected to take the photos through the transfer of electric charge. Created in 1969 by Willard Boyle and George Smith, and added-cost devices commonly used today in the world of digital photography, especially in astronomy or high-speed photography.

By transferring the photoelectric effect in the electric charge, charge-coupled device can be effectively immediately make an electronic image. While traditional photographic film can only take two per cent of incident light, the CCD can take seventy percent of it, making them far more effectively than the movie.

After the charge-coupled device can take and transfer images of each piece are given, the last of the series capacitors to change the cost of a certain voltage is then stored in memory or digital camera telescope. At this point, the voltage that can be downloaded to a computer, printed on a digital printer or stored in photo albums online.

In the scientific arena, the CCD at the telescope can easily track the movement of stars and other sky bodies.

One new alternative to the device is a cost-plus active pixel sensor (APS). The APS is cheaper, smaller version of the CCD.

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