sensor
The sensor, when translated in English, is a 'feeler', meaning to sense something. That is, it can be seen that the sensor feels something. Also, if you translate it into Chinese characters, it means "a machine that senses it." In other words, the sensor senses something and find out something from that sensation. Just like touching a cup of water with your hands and feeling the heat, you will find that the cup contains hot water. In summary, a sensor is a device that collects signals from external sources. It is a device that collects signals related to the senses, such as light, sound, chemicals, and temperature, and analyzes them in a scientific way to determine the external state. These devices are used in a wide variety of places in our daily lives.