Method and apparatus for fast coding

The purpose of the invention is to provide a fast coding scheme. In the scheme, host equipment sends a random code generation command to N pieces of slave equipment through broadcasting, the slave equipment generates a random code within a predetermined digital range based on the random code generation command, and sets the random code as an address code of the slave equipment; the host equipmentsequentially inquires the slave equipment about the to-be-determined address codes within the preset digital range through broadcasting, the slave equipment determines whether the to-be-determined address codes are address codes of the host equipment or not, if so, response about the to-be-determined address codes is returned to the host equipment, and if not, the response about the to-be-determined address codes is returned to the host equipment; and if receiving a response of one piece of slave equipment to the to-be-determined address code, the host equipment records the to-be-determined address code as an address