Bandwidth, Basic Computer Science


Bandwidth is the second concept important for transmission. This concept can be explained with the help of the traffic network mentioned earlier. If there is a two-way street, consisting of two single lanes, one in each direction, only one line of vehicles can travel in each direction. On a superhighway, however, there may be three or four lanes in each direction; cars may travel along these lanes, in parallel, each at its own rate of speed. We have a wider  'band' of highway which can accommodate more cars traveling in the same direction at the same time. In the same way, the width of the electronic path determines how many cycles or bits can travel along this given path at any given time; the more bandwidth is available, the more bits may be transmitted, and the better the quality of transmission. In a simple telephone conversation, we use a bandwidth of about 3000 bits per second or 3 KHz . Television needs more bandwidth to accommodate audio and visual signals, and uses approximately 4,500,000 Hz or 4.5 MHz. 

Frequencies and bandwidth occur from low to very high along a continuous range of frequencies called the spectrum. To keep transmission from interfering with one another, each type (voice, radio, television, satellites, etc.) is allocated a bandwidth in this spectrum. Allocation is determined for any nation by its communications commission and internationally by the International Telecommunications Union (ITU) to avoid competition for the same bandwidths by different carriers and countries. 

When bandwidths are allocated°, sufficient extra space is provided between frequencies to prevent electronic interference in so far as possible. This safety precaution might not always work, when we hear or see overlap among radio broadcasts or television programs.  

Posted Date: 10/24/2012 5:04:44 AM | Location : United States

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

Write discussion on Bandwidth
Your posts are moderated
Related Questions
The project designs a school computer lab with the necessary hardware and software components along with the IP address for different components. The computer lab consists of one I

Netbooks: Netbooks are special type of Laptop which is very  light and small. Due to its size and weight it is very portable and one may carry it very easily. Dissimilar to La

Following are some causes why we use threads in designing operating systems. A process with several threads makes a great server for instance printer server. For the reason that t

Create systems flow chart and state tranistion diagram for online placement and consultancy

Browser Cookies: A cookie is a small message sent by the Web server to a your web client. This message is stored by the browser as a text file. The basic purpose of cookie is

Coaxial Cables: Another metallic transmission medium which offers a large bandwidth, is the coaxial cable. Such cables consist of an outer protective shell made of copper tube

ATM = Asynchronous Transfer Mode Fast packet switching and multiplexing technology (cell-based ) Support the universe of services voice, video and data traffic Provides quality of

I am looking for a project which is based on ASP.NET MVC 5.Could you please help me ?

Process of Data mining Data mining is an iterative process that typically involves the following phases: Problem definition A data mining project starts with the understanding o

Question 1 What is IT auditing? Discuss the three phases involved in the IT auditing Question 2 List and explain the two types of load balancing methods Question 3