Product Information： l. There are 4 independent buttons on board, which can be used for button control, digital logic basic experiment, etc. 2. Onboard 4-digit L ED light-emitting diodes can be used for LED control, digital logic basic experiments, etc. 3. Onboard 4-digit digital tube, frequency counter, stopwatch 4. On-board 4-digit DIP switch, which can be used for switch control and other experiments 5. Equipped with 1X20 LCD panel, support LCD1602, LCD12864, TF T LCD screen (not including LCD, need to be purchased separately) 6. Precision adjustable resistance, adjust LCD backlight 7. Onboard 1 buzzer, can do sound and music experiment 8. PS2 interface, can do PS/2 keyboard experiment 9. The onboard brand new imported temperature sensor chip LM75A can be used for thermometer experiment 10. RS232 serial port, can do serial communication experiment 11. VGA interface, can be used for display experiments, etc. 12. I2C serial EEPROM AT24C08, do IC bus experiment 13. Infrared receiving module Packing List： Development board*1

مواصفات المنتج