Question

What is the resolution at which the charge-coupled device (CCD) or other sensor of a scanner samples an original?

1) Samples per inch (SPI)
2) Dots per inch (DPI)
3) Pixels per inch (PPI)
4) Resolution per inch (RPI)

Answer 1

The resolution of a scanner's CCD is measured in Pixels per inch (PPI), representing the number of detail pixels in a linear inch of a scanned image.

Step-by-step explanation:

The resolution at which the charge-coupled device (CCD) or other sensor of a scanner samples an original is measured in Pixels per inch (PPI). This measurement indicates the number of individual pixels in one linear inch of the scanned image. A CCD is a type of electronic light detector used in a variety of imaging devices, including digital cameras and scanners. Each pixel records the intensity of light, and with the appropriate colored filters, it captures color images. The more pixels per inch, the higher the detail and sharpness of the scanned image.