Specifications:
- Microcontroller: AT89C51/AT89S51 (depending on the version).
- Operating Voltage: 5V DC.
- Clock Speed: 12 MHz or 24 MHz (depending on the model).
- I/O Pins: 32 GPIO (General Purpose Input/Output).
- Memory: 4KB-8KB Flash memory, 128 bytes RAM (typical for 8051 microcontrollers).
- Communication: UART, SPI, I2C (depending on the board version).
- Power Supply: External DC power jack (7-12V) or USB.
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