说明：  no intro
(Generate an encrypted code, so that software can be used to write the registry, the registry has had a legal identity, and this is the software developer as early in the operating system has been selected well, then one ID number is registered, then register machine tool is a printed card. Printed distributed to each computer, and write the registry of each computer in the process. The computer' s registry is the management of all computer hardware and software of a system.)