The basic configuration includes: front-end, transmission, information processing, control, display, communication three major units. Security, can be understood as "security" acronym.
Security, can be understood as "security" acronym. According to the current interpretation of the Chinese dictionary, the so-called security, that is, no danger, no aggression, no accidents; the so-called prevention, that is, preparedness, preparedness, and preparedness means to be ready to cope with the attack or to avoid victimization, preparedness is to prevent and protect. Comprehensive explanation, you can give the following definition of safety precautions: preparedness and protection to cope with the attack or to avoid victimization, so that the object of protection in a safe state of no danger, no aggression, no accidents. Obviously, security is the purpose, prevention is the means to achieve or realize the purpose of security through the means of prevention, is the basic connotation of security prevention.