Feature:
1. The ISP interface is the interface for AT/AVR microcontroller to download programs, and can be equipped with a corresponding USB-ISP downloader.
2. Mini USB power supply and external stabilized power supply, onboard 3.3V stabilized power supply chip.
3. 5V and 3.3V power selection switch, expand the scope of use, and on?board devices can work normally within 5V and 3.3V.
4. Out all IO ports for easy and expansion of external devices, 3.3V and 5V power supply expansion interface, can provide power for external devices.

Specification:
Item Type: Development Board
Material: Synthetic cardboard
Purpose: The 51 single-chip development board is an experimental learning device for learning 51, STC, and AVR of single-chip computers
Input Voltage: 3-5V
Method: Serial port download and isp download are applicable

Package List:
1 x Development Board
1 x USB Data Cable