Which of the following components converts light into a digital signal?

An inverter is an electronic device that converts direct current (DC) to alternating current (AC). It does not process light or convert optical signals into digital formats. Instead, inverters are primarily used in power applications, such as solar power systems and electrical devices, not for capturing or processing images or video.

Organic Light Emitting Diodes (OLED) are a type of display technology that emits light when an electric current passes through organic compounds. While OLEDs produce images by emitting light, they do not convert light into digital signals. Their function is solely related to display technology rather than image capture.

A digitizer is a device that converts analog signals into digital form, often used for converting physical drawings or documents into digital files. However, it does not specifically convert light into digital signals like a webcam does. Digitizers focus on input from physical mediums rather than capturing light images.