What type of signal do LEDs primarily operate with?

LEDs, or Light Emitting Diodes, primarily operate with DC (Direct Current) signals. This is because LEDs are semiconductor devices that allow current to flow in one direction only, which is a characteristic of DC. When a forward voltage is applied, the LED emits light as a result of electroluminescence.

Using AC (Alternating Current) can lead to problems, as the alternating flow of current could cause the LED to blink or even be damaged, since it is not designed to handle reverse voltages. RF (Radio Frequency) signals and analog signals are not applicable in this context, as LEDs do not operate based on the principles of radio frequency transmission or continuous varying signals; they require a constant forward voltage to function properly. Thus, the operation of LEDs with DC signals is essential for their effective performance and longevity.