1-10PCS FOR Arduino FOR UNO R3 Development Board FT232 CH340 Serial port driver MEGA328PB Chip Compatible for Arduino FOR UNO R3 This version is in the original version of the optimization, mainly for foreign customers on product quality and functional requirements of the case of high design, both to ensure that the original and fully compatible with the same, but also easy to use. Advantages: 1 completely solve the traditional for UNO board win7 and win8 system is not compatible with the above instability. Especially in the pirated 64-bit WIN7 system, the official board can not be installed driver, and this version is very simple and easy to install. 2. Increase the pin socket, easy to use DuPont line. 3. Replace the 16u2, so that the cost reduced to half, consumers get the most benefits Download the program simple and convenient. You can simply use the sensor, a variety of electronic components connected (such as: LED lights, buzzers, buttons, photoresistors, etc.), to make all kinds of interesting works. The use of high-speed microprocessor controller (ATMEGA328), the development of user interface and environment are very simple, easy to understand, very suitable for beginners to learn. Performance description I / O digital input / output terminals 0 ~ 13. I / O analog input / output terminals 0 ~ 5. Support ISP download function. Input voltage: connected to the computer USB without external power supply, external power supply 5V ~ 9V DC voltage input. Output voltage: 5V DC voltage output and 3.3V DC voltage output. Using Atmel Atmega328 microprocessor controller _x000D_