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Whats the difference between CCD and CMOS sensors?

CCD CMOS sensors
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Whats the difference between CCD and CMOS sensors?

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CCDs have traditionally been the standard for high quality digital imaging. The idea was developed in the 1970’s and has been refined to the point where CCDs have very low dark current and readout noise. They are manufactured using microchip manufacturing methods, but the process is more complicated than typical microchip manufacturing. Thus, CCDs are relatively expensive to manufacture. CMOS is the same manufacturing process used to make most microchips, such as Pentiums or PowerPCs. The idea for CMOS sensors preceded CCDs, but the style of CMOS sensor that could be produced through the mid 1990’s had problems with dark current and fixed pattern noise, relegating CMOS to cheap webcams and similar devices. Nevertheless, the motivation for developing high quality CMOS sensors was strong. A CMOS sensor is basically a DRAM and it can, in principle, be manufacture red using standard CMOS methods, making it a less expensive alternative to CCDs. CMOS also consumes less power. In the 1990’s i

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