A user reports that when pressing a radio button on a tablet, an item a...

A digitizer is a component that converts the touch input on a tablet screen into digital signals that can be processed by the device. A digitizer consists of a thin layer of transparent material that covers the glass screen and has sensors that detect the position and pressure of the touch. If the digitizer is damaged, misaligned, or poorly calibrated, it can cause inaccurate touch input, such as selecting the wrong item or not responding at all12. Therefore, the most likely cause of the issue in this scenario is a faulty digitizer that may need to be replaced. The other components are not directly related to the touch input functionality of the tablet. A gyroscope is a sensor that measures the orientation and rotation of the device3. A battery is a power source that supplies electricity to the device4. A glass is a protective layer that covers the screen and prevents scratches and cracks5.

References

1: What is a Digitizer? - Definition from Techopedia

2: How to Fix a Broken Digitizer on a Tablet | Chron.com

3: What is a Gyroscope Sensor in Mobile Phones? - Definition from Techopedia

4: What is a Battery? - Definition from Techopedia

5: What is Glass? - Definition from Techopedia