People who are not experienced in installing, owning and using security systems often have a difficult time understanding the different components that are involved in a security system, but it is not difficult once you get the hang of it. One thing that trips many people up is the inclusion of a digital video recorder in most security systems. Since most people associate their television-watching with a DVR system, they often have a difficult time understanding how a digital video recorder can be used in order to keep their home or business safe. Digital video records, however, are one of the main components of a good surveillance camera system, so it is important to learn as much about them as you can before you purchase and install a system.