Generally, development boards will come with a comprehensive test program. Burn this routine into it and observe whether it works normally to detect whether it is good or bad.
The microcontroller development board is a microcontroller experimental equipment used to learn the 51 model. Chip computer technology has gone through nearly 20 years of development since its development. The development of microcontroller technology is led by the development of microprocessor (MPU) technology and very large scale integrated circuit technology, driven by a wide range of application fields, showing a more individual development trend than microprocessors. Electronics industries as small as remote electronic toys, as large as aerospace technology and other electronic industries all have the shadow of microcontroller applications.