Currently Browsing: Hardware
Oct 21st 08
Telephone System and its Working
When two computers owned by the same company or organization and are located close to each other to communicate, it is often easiest just to run a cable between them. LAN’s were in this way. However, when the distances are large or there are many computers or the cables would have to pass through a public road or other public places, the cost are usually very high. Consequently the network designers...
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Oct 18th 08
Transmission Modes
Transmission modes is the way data flows from the source to the destination. There are three modes of data transmission . Data can be transmitted in any one of them. These are as follows:-
Simplex Mode
Half-Duplex Mode
Full-Duplex Mode
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Oct 18th 08
Communication Channel Configuration
There are two basic configurations used for establishing communication channel or communication line. These are:-
(i). Point-to-Point Link
(ii). Multi-Point Link
(i). Point-to-Point Link
This point-to-point link basically relies upon the two functions i.e. transmit and receive. It is very simple channel configuration in which the computers or devices or other electronic circuits are to be connected...
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Oct 17th 08
Multiplexer and Demultiplexer
In computer networks, multiplexing is used to refer to a process where multiple channels are combined together to form a single bandwidth, and is transferred across the communication media. As we have cable in t.v. which gives plenty of channels in a single wire. This technique helps in making the transmission more inexpensive by transmitting the expensive signals. The device which perform this task...
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