digital video recorder
Definition:
A device used to digitally record television programs so they can be watched at a later time. Unlike a VCR, a DVR stores its programming on a hard drive, much like a file is stored on your computer. DVRs typically allow you to record 100 or more hours of standard television programming (much less than that for high definition programming) and allow you to perform actions not possible with a VCR such as pausing live television or setting up a scheduled recording to record your favorite shows based on title, actor, director or key word.
Here's a word you may not know...
digital zoom
Digital zoom refers to using your digital camera to zoom in on, or magnify, your subject. The amount you are allowed to zoom is usually indicated by a number followed by an x such as "4x digital zoom". Digital zoom does not use any part of the camera lens to perform the zoom. Rather, it uses the digital camera's processor to crop a smaller portion of what the camera lens sees and then expands that part of the image to the original size of the picture. This can easily result in a grainy or blurry picture. For better zoom results, rely only your digital camera's optical zoom.
It should also be noted that many digital camera manufacturers list their zoom capability by multiplying the optical zoom by the digital zoom. For example, a camera with a 3x optical zoom and 4x digital zoom may be listed as 12x total zoom. Smart consumers will pay attention only to the optical zoom setting on their digital camera.
