These devices work much like their analog counterparts except that the recording is made on a digital videotape rather than a traditional analog one. Digital recording generally provides a cleaner and thus, clearer image. Additionally, the digital circuitry in the camcorder allows for the inclusion of special digital effects, such as zooming, shooting at very low light levels, and more. Later in the semester, we will explore how this digital signal can be used directly, allowing us to have a better quality video image. Unless you spent thousands of dollars on the VCR, it more than likely is an analog device.
Information is recorded on a magnetic tape and can be played back at any time.
Many people mistakenly assume that videodiscs are digital rather than analog because they look similar to audio compact disks. However, just about all videodiscs are analog, although some disks do contain some digital information. These discs may contain text, graphics, sound and video. Additionally, many software application programs come on CD-ROM when they are purchased, rather than on numerous floppy disks. Many consumer electronics manufacturers are now producing DVD players that connect to home television sets as an alternative to pre-recorded VHS cassettes.