Recorders are recording devices. Depending on which signals are recorded with a recorder, one speaks of audio or video recorders, of cassette recorders or camera recorders(camcorders). Earlier, the classic sound recorders were called tape recorders, because the sound was recorded on a magnetic tape.
In addition to the above-mentioned recorders, there are digital recorders such as hard disk recorders( HDR), digitalvideo recorders ( DVR) and personal video recorders( PVR), as well as recorders for use in networks such as network video recorders ( NVR) and network-based personal video recorders( NPVR). CD drives and DVD drives for data recording are referred to as CD writers or CD recorders and DVD writers or DVD recorders, respectively. There is no distinction for tape drives, since all tape drives can be used equally for recording and playing back data.