1. In recent years it has become apparent that fiber-optics are steadily replacing copper wire as an appropriate means communication signal transmission.
2. 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 back to analogue reception.
3. The antenna of the receiver is then tuned so as to pick up the high-frequency wave and a demodulator is used retrieve the signal containing the visual or audio information.
4. 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.
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. Usually the term of DVD recorder is applied to standalone units that used in home theater systems, in studios, etc, but there are other types of DVD recorders and DVD recorder combos out there.
7. When you speak into an analog mobile telephone, your voice wave is linked to a radio wave and .
8. 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 separating each line and frame, any packetization.
9. Telecommunication over a phone line is called point-to-point communication because it between one transmitter and one receiver.
10. Hence the information from a low-frequency analogue signal must be on a higher-frequency signal (known as a carrier wave) before transmission.