Which technology is frequently used in consumer devices for imaging sensors?

• A. CCD
• B. CMOS
• C. PSP
• D. PMT

Answer: (B)

In consumer devices, imaging sensors are mainly built with CMOS technology because it combines small size, low power use, and lots of integration with processing circuitry. Each pixel can have its own readout transistor and sometimes even amplification and analog-to-digital conversion on the same chip, which simplifies manufacturing and reduces power and cost. This on-chip integration lets smartphones, laptops, and other gadgets run efficiently, deliver fast frame rates, and keep sensor modules compact while steadily improving image quality as the technology matures. While CCDs were once common for high-end imaging, they require more power and a separate readout path, making them less ideal for mass-market devices. The other options aren’t imaging sensors used in consumer cameras: PSP is a handheld gaming device, and PMT is a photomultiplier used mainly in specialized scientific instruments.