Novel random number generation methods and random number generators s based on continuous-time chaotic oscillators are presented. During a search for the data code in the data set, the method decides whether the data code is to be classified as acceptable or unacceptably faulty. The inspection station provides operating power, illuminating light, and first and second polarizers. A lighting assembly that includes the retaining device is also disclosed. The backup apparatus eliminates redundant files and indicates to the clients, prior to the file back up, that some files requested to be backed up are already stored and are not to be sent. The translation resources are connected to the invention using a flexible architecture that can be deployed on intranets as well as the Internet.