PowerfulPerformance The 51 MCU Development Board features a highperformance 51 microcontroller chip, offering excellent computing powerand stability to meet complex development needs. User Friendly Development Environment With its user friendly graphicalinterfaceand extensive code library, the accompanying development software makes it easy for beginners to and quickly develop and debug their projects. Engineers and Makers This development board is an essential tool for engineers and makers to realize IoTprojects and embedded systems. It allows for rapid prototyping, development, and debugging. Versatile Applications Suitable for industrial control and automationfields, this development board has been meticulously designed and rigorously tested to high stability and reliability for long term operation. For Education and Training Perfect for electronic design and embedded system courses in universities and high schools, this development board helps students understand andmaster the technology of microcontroller development. Product name: STC89C52 Development board Main control chip: STC89C52 Crystal frequency: 11.0592M / 12M Input Output Power supply Size: 90mmx77mm/3.54x3.03in On-board resources: The ISP download (available) when using AT89S52 devices or ATMEGA16 Active buzzer; The power The power light The data receiving and transmitting light PL2303 communication chip DS18B20 temperature 38K receiving ZIF pluggable chip The LCD1602 LCD display LCD12864 LCD Colour:As Shown Material:PCB Package Contents: 1 x STC89C52 Development Board Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.