Supports USB camera, MIPI CSI camera
4 external USB HOST
7 serial ports: 2 TTL, 5 RS232 (one of which supports flow control), support for external serial device module (expansion sensor or 1D / 2D bar code scanner, Printer, card reader module, etc.)
1 serial standard I2C interface
Support headphone output,Built-in amplifier,10W*2 8 euro horn
1 ADC KEY interface, you can extend multiple key functions;standby, reset button interface
4 GPIO ports, TTL level output, you can control more modules
1 standard I2C capacitive screen interface