What is Rapsberry Pi?

To build home automation with this system you only need RapsberryPi for the core. What it is? Wiki page says
The Raspberry Pi is a low cost, credit-card sized computer that plugs into a computer monitor or TV, and uses a standard keyboard and mouse. It is a capable little device that enables people of all ages to explore computing, and to learn how to program in languages like Scratch and Python. Continue reading “What is Rapsberry Pi?”