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PC based DVRs operate much in the way as stand alone DVRs, but use video capture cards and additional software to carry out the operations of the DVR, these types of DVR can easily be upgraded to accept additional cameras … Continued
A stand alone DVR is designed specifically for CCTV systems. It uses computer hard drives to store video information and an embedded operating system to control the functions of the DVR; this type of recording device is most commonly used … Continued