* Programming - The Arduino/Genuino Uno can be programmed with the (Arduino Software (IDE)). * Warnings - The Arduino/Genuino Uno has a resettable polyfuse that protects your computer's USB ports from shorts and overcurrent. * Differences with other boards - The Uno differs from all preceding boards in that it does not use the FTDI USB-to-serial driver chip. * Power - The Arduino/Genuino Uno board can be powered via the USB connection or with an external power supply. * Memory - The ATmega328 has 32 KB (with 0.5 KB occupied by the bootloader). It also has 2 KB of SRAM and 1 KB of EEPROM (which can be read and written with the EEPROM library). * Input and Output - See the mapping between Arduino pins and ATmega328P ports. The mapping for the Atmega8, 168, and 328 is identical. * Communication - Arduino/Genuino Uno has a number of facilities for communicating with a computer, another Arduino/Genuino board, or other microcontrollers. * Automatic (Software) Reset - Rather than requiring a physical press of the reset button before an upload, the Arduino/Genuino Uno board is designed in a way that allows it to be reset by software running on a connected computer.

* Small, stackable, and cheap; * Open source hardware circuit design and Arduino compatible programming development environment; * Like Arduino, Microduino can use ISP download method to burn programs into the bootloader flexibly; * Can easily connect with all other Microduino modules.; * 2.54mm (0.1 inch) pin pitch, compatible with bread boards and pegboards. * Microduino Size: 25.4mm X 27.94mm * 22 digital I/O input/output ports * Eight analog I/O input ports * PWM support * Serial port support * SPI support * I2C support * External interruption support * Support ISP download function