Digital sensor is a term commonly used in the technology industry to describe the device that captures and measures the physical or environmental data and converts it into a digital signal. However, there are a few other synonyms that can be used interchangeably to describe digital sensor. These include electronic sensor, optical sensor, photoelectric sensor, and transducer. An electronic sensor is a device that converts physical measures like pressure, temperature, etc. into an electrical signal. An optical sensor detects the physical changes in the light and converts them into an electrical signal, while a photoelectric sensor is a specific type of optical sensor that detects light. Finally, a transducer is a broader term that encompasses both electronic and optical sensors, and it converts physical signals into electronic or optical signals.