1. Hence the information from a low-frequency analogue signal must be superimposed on a higher-frequency signal (known a carrier wave) before transmission.
2. In recent years it has become apparent that fiber-optics are steadily replacing copper wire as an appropriate means communication signal transmission.
3. The nature of computer network communication lends itself to a layered approach where individual protocols in the protocol stack more-or-less independently of other protocols.
4. Although short-distance calls may be handled from end-to-end as analogue signals, increasingly telephone service providers are transparently converting the signals to digital for transmission before converting them to analogue for reception.
5. Multi-mode fibre can be thought of as thicker optical fibre that is cheaper to manufacture but that suffers from less usable bandwidth and greater (i.e. poor long-distance performance).
6. When you speak into an analog mobile telephone, your voice wave linked to a radio wave and transmitted.
7. The clock signal is virtually the same as that of the analog video signal, while the picture is sent electronically line by line with blanking intervals each line and frame, sans any packetization.
8. Telecommunication over a phone line is called point-to-point communication because it is between one transmitter and receiver.
9. Usually the term of DVD recorder is applied to standalone units that are used in home theater systems, in studios, etc, but there are other types of DVD recorders and DVD combos out there.
10. The antenna of the receiver is then tuned so as to pick up the high-frequency wave and a demodulator is used to retrieve the signal the visual or audio information.