Arm company is a leading IP core supplier, which mainly provides high-performance RISC processor, peripheral and system chip technology authorization for other famous electronic companies in the world. At present, arm's processor core has become RISC standard for portable communication, handheld computing devices, multimedia digital consumer products and other programs. The company was formed by the merger of acorn, apple and VLSI in November 1990. Headquartered in Cambridge, UK, it has many product design centers in Cambridge, Texas, USA and sales offices all over the world. The company consists of six business units: 1. Product authorization unit: to provide authorization for microprocessor and system chip technology; 2. System development unit: to provide a fully integrated development environment for designers; 3. Bluetooth unit; 4. Software system unit; 5. System on chip unit; 6. Support service unit