Can you tell me the main use of crystal oscillator and microphone?

Home appliances: radio oscillator and control circuit clock, TV controller clock and color carrier frequency, cordless phone carrier frequency, VCD color carrier frequency and control circuit clock, game machine color carrier frequency and control circuit clock.

All kinds of clocks and watches internal clock.

Wireless communication equipment carrier frequency and control clock.

Measuring instrument clocks, such as frequency meters, signal generators, network analyzers, spectrum analyzers.

Medical equipment, such as electrocardiogram, ultrasound, CT imaging equipment.

Computer industry, computer motherboards, sound cards, graphics cards, monitors, printers, copiers, scanners.

There are also various device controllers, wherever the CPU is used in the circuit, the CPU clock needs to be provided, and this clock, with the quartz crystal resonator. Of course, there are also circuits directly mounted on the quartz clock oscillator.

In addition to this, it also includes military technology, aerospace and other fields.