* 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.

* Debugging serial port - a root-level session is initiated to this serial port at power up. It can be accessed as a 3.3V serial port, 8-N-1, no handshaking. * Android buttons - these duplicate the functions of the hardware buttons on many Android-based tablets and phones. In Android programming, these buttons have a special function. * GPIO - four 3.3V GPIO pins. * SPI - two dedicated SPI peripheral headers. J6 is the SPI2 peripheral; J7 is the SPI0 peripheral, which is also broken out to the appropriate pins on the Arduino-ish headers. SPI0 pins also provide access to two more UARTs and external interrupts, as well. * Arduino-ish headers - these pins closely follow the functionality of the pins on standard Arduino-compatible boards: I2C, SPI, UART, PWM, and ADC. The mapping is the same as it would be on a standard Arduino-compatible, as well, making it easy to convert Arduino shields to work with pcDuino.