Recently, I have been working on projects that use MCUS and DSPS. MCU is often used in the design of control, bus communication such implementation, flexibility is strong. DSP pays more attention to processing speed and performance, and is mostly used for digital signal processing, which depends on peripheral circuit design. Such as some chips use i2c or spi initialization configuration, can bus communication, Ethernet communication, often with MCU. dsp is given a digital or analog input, quickly get a desired digital or analog output. From a hardware perspective, DSP processing speed is faster than MCU, especially the speed of floating-point arithmetic and integer, method. Therefore, a lot of image processing and audio processing algorithms are often done on the dsp. Another feature of dsp is that there is often no built-in flash, and an external flash storage program is required. In addition, the use of dsp is inevitable to combine assembly to improve code efficiency, so the difficulty of dsp is greater than mcu. We recently in using adi DSP and MCU of NXP, the price is higher, the resources is far less than TI DSP and MCU of ST, beginner to use is not recommended. Taking into account the cost, the amount of data, easy to use, it is recommended to start stm series mcu, and then learn dsp. dsp is recommended to learn TI tms320, B station has a lot of good reference video tutorials.