The Arduino Nano is a small, complete, and breadboard-friendly board based on the ATmega328. It has more or less the same functionality of the Arduino Duemilanove, but in a different package. It lacks only a DC power jack, and works with a Mini-B USB cable instead of a standard one.

Specifications

• Microcontroller:     Atmel ATmega328
• Operating Voltage (logic level):     5 V
• Input Voltage (recommended):     7-12 V
• Input Voltage (limits):     6-20 V
• Digital I/O Pins:     14 (of which 6 provide PWM output)
• Analog Input Pins:     8
• DC Current per I/O Pin:     40 mA
• Flash Memory:     32 KB of which 2 KB used by bootloader
• SRAM:     2 KB
• EEPROM :    1 KB
• Clock Speed:     16 MHz
• Dimensions:     0.73" x 1.70"
• Length:     45 mm
• Width:     18 mm
• Weigth:     5 g

Packing List

• 1x Arduino Nano v3.0
• Pin headers

Driver Download

http://www.arduined.eu/ch340g-converter-windows-7-driver-download/