ARM is a British company that designs and licenses Architecture for a wide range of CPUs. But before we take a closer look at them, let's understand the NEED for what it is based on - the RISC arch.
RISC architecture of computing is inherently designed to simplify the individual instructions given to the computer to accomplish tasks. The goal is to offset the need to process more instructions by increasing the speed of each instruction, in particular by implementing an instruction pipeline, which may be simpler to achieve given simpler instructions.
Compared to the Complex Instruction Set Computer (CISC), a RISC computer might require more machine code in order to accomplish a task because the individual instructions perform simpler operations.
The key operational concept of the RISC computer is that each instruction performs only one function (e.g., copy a value from memory to a register). The RI