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The Arduino Uno is a microcontroller board based on the ATmega328 ."Uno" means one in Italian and is named to mark the upcoming release of Arduino 1.0. It has 14 digital input or output pins , 6 analog inputs, a 16 MHz ceramic resonator, 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. The Uno differs from all preceding boards in that it does not use the FTDI USB-to-serial driver chip. Instead, it features the Atmega16U2Atmega8U2 up to version R2) programmed as a USB-to-serial converter. This is your first step towards interfacing the LCD and keypad with your Arduino.