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A pair of TTL level serial port transceiver: RX / TX
Analog Input Pins: 16
but what about programing
SIM808 module on-card functions as GSM communicator and GPS receiver
White Character Blue Backlight
Arduino UNO R3 Official Genuine Version + USB Cable soldering A pair of TTL levelArduino Uno is a microcontroller board based on the ATmega328P. It has 14 digital input output pins (of which 6 can be used as PWM outputs), 6 analog inputs, a 16 MHz ceramic resonator (CSTCE16M0V53 R0), a USB connection, a power jack, an ICSP header and a reset button. It contains everything needed to support the microcontroller simply connect it to a computer with a USB cable or power it with a AC to DC adapter or battery to get started.
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