What is the difference between a VCR and a DVR?
A VCR (Video Cassette Recorder) uses videotapes upon which to record its data. The quality if the images on videotapes is compromised over subsequent recordings. A DVR (Digital Video Recorder) uses a hard disk drive upon which to record data. The quality if this video does not degrade, even after hundreds of recordings. With a DVR, searching the video for specific footage is much easier and efficient than with a VCR.