Features: PowerfulPerformance The 51 MCU Development Board features a highperformance 51 microcontroller chip, offering excellent computing powerand stability to meet various 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 get started and quickly develop and debug their projects. Engineers and Makers This development board is an essential tool for engineers and makers to realize various 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 ensure 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. Specifications: Product name: STC89C52 Development board Main control chip: STC89C52 Crystal frequency: 11.0592M / 12M Input voltage: DC5V Output voltage: DC5V Power supply mode: an external power supply DC5V power supply, the USB Size: approx 90mmx77mm/3.54x3.03in On-board resources: The ISP download interface (available) when using AT89S52 devices or ATMEGA16 Active buzzer; The power switch; The power indicator light The data receiving and transmitting light PL2303 communication chip DS18B20 temperature sensor interface 38K infrared receiving head interface ZIF pluggable chip carrier The LCD1602 LCD display interface LCD12864 LCD interface Note: Transition: 1cm=10mm=0.39inch Please allow slightly 0-1cm difference due to manual measurement. Colors can appear different depending on light and how the listing is viewed. Thanks for your understanding and attention Package includes: 1PC x Development board