Color Deep Blue Brand Funduino Model UNO R3 Quantity 1 Piece Material FR4 English Manual / Spec Yes Download Link Http://arduino.cc/en/Main/Software Other Features The open-source Arduino environment makes it easy to write code and upload it to the i/o board. It runs on Windows Mac OS X and Linux. The environment is written in Java and based on Processing avr-gcc and other open source software. Summary Microcontroller ATmega328; Operating Voltage: 5V; Input Voltage (recommended): 7~12V; Input Voltage (limits): 6~20V; Digital I/O Pins: 14 (of which 6 provide PWM output); Analog Input Pins 6 DC Current per I/O Pin 40 mA DC Current for 3.3V Pin 50 mA; Flash Memory: 32 KB (ATmega328) of which 0.5 KB used by bootloader SRAM 2 KB (ATmega328) EEPROM 1 KB (ATmega328) Clock Speed 16 MHz Packing List 1 x UNO R3 1 x Keypad Shield V2.0 LCD1602 1 x USB cable (56cm)