Embedded system hardware model structure. This system is mainly composed of microprocessor MPU, peripheral circuits, and peripherals. The microprocessor is an ARM embedded processing chip, such as ARM7TMDI series and ARM9 series microprocessors. MPU is the core of the entire embedded system hardware and determines the functions and application areas of the entire system. The peripheral circuits vary slightly depending on the microprocessor, and are mainly composed of power management models, clock modules, flash memory FIASH, random access memory RAM, and read-only memory ROM. These devices are necessary for a microprocessor to work properly. External devices will vary according to needs, such as universal communication interfaces USB, RS-232, RJ-45, etc., input and output devices, such as keyboards, LCDs, etc. External devices will be customized according to needs.
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