Final answer:
Electronic signals are caused by the interaction of electromagnetic waves with components in devices, amplifying and converting these signals into usable formats, while digital electronics use binary code and transistors to manipulate data and signals.
Step-by-step explanation:
The cause of electronic signals in electronics can be explained by the interaction of electromagnetic waves with electronic components. In devices like radios and televisions, electromagnetic waves accelerate electrons in an antenna creating a standing wave. These electrical components then pick up and amplify the signal, which is eventually converted into audio and/or video formats. Modern electronic devices utilize both analog and digital signals to perform various tasks. Digital signals, specifically, represent binary code, and are made possible by the use of transistors acting as on-off switches integrated into circuits.
Furthermore, to reduce the interference between digital signals, techniques like counter-winding coils are used to minimize mutual inductance, ensuring clear signal transmission in complex digital circuitry. In the broader context, strict regulations on radio frequency bands are implemented to prevent interference among the myriad of electromagnetic signals that surround us, from astrophysical instruments to everyday remote devices.