Raspberry Pi - Wikipedia
https://en.wikipedia.org/wiki/Raspberry_PiThe Raspberry Pi hardware has evolved through several versions that feature variations in the type of the central processing unit, amount of memory capacity, networking support, and peripheral-device support. This block diagram describes models B, B+, A and A+. The Pi Zero models are similar, but lack the Ethernet and USBhub components. The Ethernet adapter is internally connected to an additional …