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The frequency at which a crystal oscillator resonates is determined by its physical ________ and cut.
Answer: dimensions
Crystal oscillators use piezoelectric quartz crystals whose resonant frequency depends on physical dimensions (thickness, shape) and crystal cut (AT, BT, SC). Thinner crystals resonate at higher frequencies. Used for precise clock generation in microcontrollers, communication systems, and digital circuits. Temperature-compensated (TCXO) and oven-controlled (OCXO) variants improve stability.