Explain noise immunity.

Noise immunity is a characteristic of a system or device that allows it to resist or tolerate interference or distortion caused by electrical noise. Electrical noise can be caused by various external sources such as electromagnetic interference (EMI), radio frequency interference (RFI), or internal sources such as switching circuits or power surges.

Devices or systems with high noise immunity are designed to filter out unwanted disturbances and only respond to the intended signal or input. This can be achieved through various methods such as shielding, filtering, grounding, or using error-correcting codes.

Overall, noise immunity is essential for ensuring the reliability and accuracy of electronic devices and systems, especially in environments where noise interference is common. Devices with high noise immunity are able to maintain optimal performance and functionality in the presence of external or internal disturbances.