Features of the Arduino Nano:
It uses ATmega 168 or ATmega328 microcontroller.
Its operating voltage is 15V.
Its input voltage is 7 to 12 volts.
Its input voltage is 6 to 20 volts.
It has 14 digital input-output pins.
It has 8 analog input pins.
4 mA is the current per i/o pin.
Its flash memory is 16kB.
Its SRAM is 1 KB.
Its EEPROM size 512 bytes.
Its clock speed is 16 MHz.
Its dimension is 0.73 inches and 1.7 inches.
Its length is almost 45 mm.
Its width is 18mm.
Its weight is 5g.