CCD stands for "Charge-Coupled Device" and is a technology used in digital imaging devices, such as digital cameras and telescopes. A CCD consists of an array of light-sensitive pixels that convert incoming photons into electrical signals, which can be processed and stored as digital images. This technology offers high resolution and sensitivity, making it widely used in scientific research, astronomy, medical imaging, and consumer electronics. CCD technology has revolutionized the way images are captured, stored, and manipulated in a wide range of applications.