ARM usually refers to the company ARM holdings, which is now famous for being behind the processor designs of the large majority (some say 98%) of the smartphones in the world. The ARM Architecture is a set of instructions based on the idea of RISC (reduced instruction set computer) which says that reducing the number of instructions to the most basic enables faster execution of each instruction. ARM Licenses the instruction set or complete processor design to its clients, which includes Nvidia, Qualcomm, Marvell, Freescale, TI, ST-Ericsson and many others.

---