In computing, a devicetree (also written device tree) is a data structure describing the hardware components of a particular computer so that the operating system's kernel can use and manage those components, including the CPU or CPUs, the memory, the buses and the peripherals. The device tree was derived from SPARC-based computers via the Open Firmware project. The current Devicetree specificationis targeted at smaller systems, but is still used with some server-class systems (for instance, those described by the Power Architecture Platform Reference).