This development board with aPIC16F877A chip.

The DIP40 locking device, easy to remove the PIC microcontroller for reuse

8 independent LED(Marquee experiments)

4 common anode digital tube

1 * 3 independent keys

3 * 3 matrix of buttons

DS1302 Electronic Clock (electronic clock experiment)

DS18B20 temperature sensor (temperature detection and display)

AT24C02 I2C external memory

internal EEPROM read and write

buzzer (MCU sound, music play)

the MAX232 chip RS232 communication

ADC potentiometer input conversion (AD conversion experiments)

USB power supply

DC-machine interface (PWM to achieve speed)

stepper motor interface

infrared receiver

1 channel relay

PS2 keyboard interface

external reset circuit

All IO ports pin have extraction and clearly marked