Popular CPU chip means that the chip contains a microprocessor, its function is equivalent to a microcomputer. People often use the integrated circuit card (IC card) on the metal sheet is the CPU card chip. The CPU card can be used in many fields such as finance, insurance, traffic police, government and other industries. It has such features as large user space, fast reading speed and multi-use of one card. It has also been certified by the People's Bank of China and the State Trade Commission. CPU card and the appearance from the general IC card, RF card no difference, but the performance has greatly improved, security and general IC card ratio, improved a lot, usually CPU card contains a random number generator, hardware DES, 3DES Encryption algorithms, etc., with the operating system that on-chip OS, also known as COS, can achieve financial-level security level.