Arduino UNO R3 16U2 DIP Version With Cable
Arduino Uno is a microcontroller board based on 8-bit ATmega328P microcontroller. Along with ATmega328P, it consists other components such as crystal oscillator, serial communication, voltage regulator, etc. to support the microcontroller. Arduino Uno has 14 digital input/output pins (out of which 6 can be used as PWM outputs), 6 analog input pins, a USB connection, A Power barrel jack, an ICSP header and a reset button.Arduino IDE (Integrated Development Environment) is required to program the Arduino Uno board. Download it here.

Applications
Prototyping of Electronics Products and Systems
Multiple DIY Projects.
Easy to use for beginners and hobbyists.
Projects requiring Multiple I/O interfaces and communications.
Package Content:
1 x Arduino UNO R3

1 x USB CableMicrocontroller ATmega328P – 8 bit AVR family microcontroller
Operating Voltage 5V
Recommended Input Voltage 7-12V
Input Voltage Limits 6-20V
Analog Input Pins 6 (A0 – A5)
Digital I/O Pins 14 (Out of which 6 provide PWM output)
DC Current on I/O Pins 40 mA
DC Current on 3.3V Pin 50 mA
Flash Memory 32 KB (0.5 KB is used for Bootloader)
SRAM 2 KB
EEPROM 1 KB
Frequency (Clock Speed) 16 MHz