Frequency

Frequency is the number of complete cycles or oscillations that occur in a periodic signal within a specific time period, typically measured in Hertz (Hz). In electronics, it describes how rapidly an alternating current (AC) signal, digital pulse train, or oscillating waveform repeats its pattern. Higher frequencies mean more cycles per second, which is crucial for applications like radio communications, clock signals in digital circuits, and audio processing where different frequencies represent different tones or data rates.