A typical Arduino microcontroller board is pretty small, about the size of a credit card. This makes it suitable for embedding into all sorts of electronic devices. But it's possible to go even ...

You may have never used Raspberry Pi or Arduino ... a Raspberry Pi board has all the trappings of a PC with a dedicated processor, memory, and a graphics driver for output through HDMI.

In need of a simple microcontroller board for your project? Then, an Arduino ... as an analog input) doubles as a digital-to-analog converter (DAC) pin that acts as an analog output.