This group includes components designed for frequency generation, signal timing, and synchronization in electronic circuits. They are crucial for ensuring stable and accurate operation in communication, computing, and consumer electronics. Crystals provide precise frequency control through natural oscillations, commonly used in clocks, microprocessors, and RF systems. Oscillators generate stable waveforms and are vital for timing and frequency reference in digital and analog circuits. Resonators are cost-effective alternatives for moderate precision timing in applications like remote controls and low-end microcontroller systems. Together, these parts ensure the reliability and consistency of electronic systems across a wide range of industries.