ARM processors are at the heart of many mobile phones, digital cameras, and other small portable devices. One characteristic of the processor that leads to this wide use is the low power consumption – a critical factor when battery life is a key product requirement. ARM processors are also heavily used in embedded control applications. As the mobile phone has evolved into an internet device with the tasks more typically associated with a PC (web browsing, media playback, etc), the processing capability has grown, such that the “simple” phone processor is now a much more capable device, a multiple core device that has the capability to move into the data center. This class looks at the range of processors comprising the ARMv7 architecture and the upcoming ARMv8 64-bit architecture, how the processors across the range are similar yet target different markets, and compare the architecture with Intel’s IA-32 architecture.