Communication channels, Basic Computer Science

Assignment Help:

COMMUNICATION CHANNELS:

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.  


Related Discussions:- Communication channels

Unix, How do I change file permissions? Every time I execute chmod commands...

How do I change file permissions? Every time I execute chmod commands it tells me permission denied.

Basic parts of a computers, The basic parts of a computers are shown in Fig...

The basic parts of a computers are shown in Figure.   Input devices such as a keyboard, mouse or scanner are used to enter input (data and/or instructions), directly

Search strategies, Search strategies are evaluated along four main dimensio...

Search strategies are evaluated along four main dimensions. Name those dimensions and briefly describe each one

Cad cam, Define explicit, implicit and parametric representation and what a...

Define explicit, implicit and parametric representation and what are their advantages?

Understanding human intelligence in social, Understanding human intelligenc...

Understanding human intelligence in social AI can be taken as just the current tool in the philosopher's toolbox for answering of questions for the behaviour of human intellig

Basic concepts of Assembler language , Information Units In order for the P...

Information Units In order for the PC to process information, it is essential that this information be in unique cells called registers. The registers are sets of 8 or 16 flip-flop

Mainframe architecture, Mainframe Architecture: Till a few decades bac...

Mainframe Architecture: Till a few decades back, all computing was controlled through the central mainframes server. Multiple users could connect to the central host through u

The gigo principle, The GIGO Principle : This is a simple principle with a...

The GIGO Principle : This is a simple principle with a clear message and universal application - Garbage In - Garbage out! Always try and enter any data in the form you want to

What features should the hospital software contain?, What Features Should t...

What Features Should the Software Contain? Although the needs of every nursing department, hospital, pharmacy, would vary, certain common features are desirable in the software

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd