This recipe explains which components are needed for the initial boot, in addition to the Raspberry Pi, before it can be powered on for the first time.
The Raspberry Pi Foundation has released a number of versions of the Raspberry Pi since it was first released in June 2012, which include Raspberry Pi B (April 2012), Raspberry Pi A (February 2013), Raspberry Pi Compute Module (April 2014), Raspberry Pi Model B+ (July 2014), and the Raspberry Pi 2 Model B (February 2015).
The original Raspberry Pi Model B has a memory of only 512 MB, a single-core processor, and two USB ports. The current model, the Raspberry Pi 2 Model B, has a memory of 1 GB, a quad-core processor, and four USB ports.
The examples in this book ...