Communication channels, Basic Computer Science


A wire pair connecting two telephones is the simplest circuit, allowing communication in both directions. Other channels include coaxial cables, optical fibres, satellites, a light beam, microwaves, and others. Whatever the physical medium over or through which message travels, transmission may take place in a number of different modes. They are :

Simplex Half-duplex and Full-duplex. Simplex  In this type of channel, the message travels in only one direction, that     is from point A to point B but not back again. 

Half-Duplex: Transmission can take place in either direction, but not at the same time. In other words, message can be transmitted either from A to B or by B to A one at a time. 

Full-Duplex: In this type of arrangement messages can be transmitted and received over the same channel at the same time. Many librarians and information scientists are familiar with the latter two types because database search terminals must be set to transmit full or half duplex in order to communicate with database vendors' computers.  

Posted Date: 10/24/2012 5:08:07 AM | Location : United States

Related Discussions:- Communication channels, Assignment Help, Ask Question on Communication channels, Get Answer, Expert's Help, Communication channels Discussions

Write discussion on Communication channels
Your posts are moderated
Related Questions
It would not emerge practical to type an entire program each time it is required, and to avoid this it is possible to store a program on the disk, with the vast advantage that by b

Consider the state transition diagram of Figure 3.9b. Suppose that it is time for the OS to dispatch a process and that there are processes in both the Ready state and the Ready/Su

Priority Scheduling • The fundamental idea is straightforward: each process is assigned a priority, and priority is permitted to run. Equal-Priority processes are scheduled in FCF

how to measure marginal utility.?

educational website project

Question 1 Elaborate the various steps in performing a Mail Merge. Execute one mail merge operation for sending invitation for a conference which is being conducted in your organi


how do you let kids learn on it

Hello i am a computer science student. now we are going to start our final project. we want to work on Google App Inventor and we want to create mobile application. we are two grou

QUESTION (a) (i) Why is the Random class in the .NET framework not suitable for generating random bytes for cryptography purposes? (ii) Mention two characteristics required