CompTIA A+ Core 1 (220-1101) — Question 40

Which of the following components enables the input on a mobile device's touch screen?

Answer options

• A. OLED
• B. Digitizer
• C. Inverter
• D. CMOS sensor

Correct answer: B

Explanation

The correct answer is B, the Digitizer, as it specifically translates the touch input into a digital signal that the device can understand. The OLED is a display technology, the Inverter is used for converting DC to AC power, and the CMOS sensor is typically used for capturing images, making them unsuitable for touch input detection.