Arduino is an open source, computer hardware and software company, project, and user community that designs and manufactures microcontroller kits for building digital devices and interactive objects that can sense and control objects in the physical world.
The Arduino Uno R3 ATmega328P is a micro controller board based on the ATmega328. It has 14 digital input/output pins (of which 6 can be used as PWM outputs), 6 analog inputs, a 16 MHz crystal oscillator, a USB connection, a power jack, an ICSP header, and a reset button. It contains everything needed to support the micro controller; simply connect it to a computer with a USB cable or power it with a AC-to-DC adapter or battery to get started.
Digital I/O Pins: 14 (of which 6 provide PWM output)
Flash Memory: 32 KB (ATmega328P) of which 0.5 KB used by bootloader.
SRAM: 2 KB (ATmega328P), Operating Voltage 5V
A Good Quality Product
Buy this product from the most popular online store : Hobby and You