An RC oscillator is an electronic circuit that generates a continuous waveform, typically a sine or square wave, using resistors (R) and capacitors (C). It relies on the charging and discharging of the capacitor through the resistor to create oscillations. The frequency of the oscillation is determined by the values of the resistor and capacitor used in the circuit. These oscillators are commonly used in various applications, including signal generators, timing circuits, and audio applications. They are valued for their simplicity and low cost, making them suitable for both hobbyist projects and professional electronic designs.