11 Mar 10 Characteristics of a Sound Wave
A sound wave has three important characteristics, which are
Frequency, is defined as the number of sound waves that are created or received in any given length of time. Frequency is measured by using Hertz (Hz).
Amplitude, is defined as the result of the waveforms which are created when someone talks, loudly or softly.
Amplitude of the waveforms usually is measured in Decibels or dB.
Phase, is defined as the time interval in between two very similar events. A waveform usually travels 360 degrees in order to complete one cycle.
11 Mar 10 Technical Education
There are many technical schools all over the country that you can enroll yourself in to get quality technical education in the telecom field. This will be very helpful in getting the needed education so that you can secure a good job in this domain. It will help you to get the needed qualification in order to get a good job.
11 Mar 10 The Subscriber
Any customer connected to a subscriber’s loop who receives and pays for telephone services is called a subscriber. Many pairs of wires are used to connect all the telephones in a subscriber’s loop. To easily distinguish one pair of wires in a cable from all of the others, each pair is coded and numbered according to a standard color coding system. Using this color coding system, technicians assign a specific pair of color-coded wires to each telephone in the Local Line Distribution Network.
11 Mar 10 The us of language protocol in telecommunication
In any form of telecommunication, for the sender’s message to be understood by the receiver, the message must follow a protocol. A protocol is a set of rules that people or machines follow to enable them to communicate with each other. Protocols exist for people communicating with other people, and for machines communicating with other machines. For example, in a face-to-face communication, we use the language protocol. There are three aspects, or levels, of the language protocol. They are:
Semantics-which is the meaning of the communication
Syntax-where words or gestures are assembled to communicate the thoughts, or the grammar of the language
Presentation-which represents physical aspects of the communication
11 Mar 10 Data Communication Characteristics
Data communication is characterized by the number of bits transmitted at a time, the direction of communication and the synchronization.
Serial and Parallel Transmission
Data can be transferred serially or in parallel. Serial transmission occurs when one bit is transferred at a time. When 8 bits are received, it is interpreted as one symbol. Parallel transmission sends 8 bits all at once over different wires. Parallel transmission is faster than serial transmission. Parallel transmission is often used between a computer and a printer. When two computers communicate over analog telephone lines, there is only a single wire available; so serial communication is used.
Synchronous and Asynchronous Transmission
Data transmission could be either synchronized or asynchronized. Synchronous transmission is based on time. With synchronous transmission, bits are transmitted at specific time intervals. For example, the transmitting device will send one bit every 125 ms, and the receiving device will receive a bit every 125 ms. These devices need to be synchronized for this type of transmission.
Asynchronous transmission is not based on time. Digital data is transmitted with varying intervals between characters. Start and stop bits flag the beginning and end of each character. Asynchronous transmission is usually the method for data communication over analog telephone lines.
08 Mar 10 Watch Movies Online For Free
Entertainment is an expense that one does not wish to curtail. Every family would like to have fun watching their favorite movie. People do not mind spending to watch their favorite movie. But with recession hitting the global economy, one needs to plan each and every expense. People have started to cut their expenditure on accessory needs such as entertainment. But zenetworks.co.uk is a website that allows us to Watch Movies Online For Free. Just a basic internet connection allows us to sit at home and watch our favorite movie without paying for it. It also has Free Documentaries Online, which stimulates our social thoughts.
05 Mar 10 Popular Cell Phone Accessories
The growing popularity of cell phones amongst the populace has enabled alternativewireless.com to create a niche market in cell phone accessories. Alternativewireless.com has a range of accessories to suit all popular models of cell phones. The cell phone accessories are preferred by users for their functional aspect as well as the protective element they provide to the cell phone. To source for rugged cell phone chargers or a cheap charger, alternativewireless.com is the best resource. Beautiful, stylish and expensive cell phone cases are the order of the day, as that helps one to add esteem to his general persona. Visit the site for more information.
Tags: Cell Phone, Chargers
03 Mar 10 Adding A New Color To Kids Lives
Many a times it gets very difficult to get things with in our limits. However there is always a replacement of everything. There is no more a need to spend a lot of money to invest on dresses. Mygirldress.com has actually made flower girl dresses absolutely affordable. Perhaps it’s the quality and the fame that it has built in the past that it has been liked appreciated and recommended by the people. Moreover junior bridesmaid dresses are available which was difficult to be found for different sizes. Mygirldress.com gives you the opportunity to see the dress and also the price is listed with in which makes the wedding shopping absolutely pain and effortless.
02 Mar 10 How Business Stationary Attracts?
When you receive any business letter, then what is the first thing that attracts you about that company? Business Stationary of that company, no doubt. Stationeries are surely the first ambassador of any organization. When you look at the business stationery printing, you will immediately create a mental picture about that organization. Which can be either positive or negative depends on the quality of their Corporate Stationery. Wells & Drew is in the business of supplying quality product in this field. They are an established company and one can get the details about their business in their website at Business Stationery Printing. Grow your business with the help of masters of the field.
Tags: Business, Stationary
02 Mar 10 For The Best Eyelid Surgery
Dr. Kapadia, an assistant professor at Tufts University School of Medicine and member Center for Aesthetic Eyelid Surgery and Facial Surgery at the New England Eye Center, a division of Tufts Medical Center is one of the best Eyelid Surgeon to go for removing eyelid puffiness and bags under eye. He is the best eyelid specialist with extensive training in eyelid, lachrymal and orbital surgery. He performs hundreds of corrective eyelid, lachrymal and orbital surgeries. The website bostoneyelids.com provides in-depth information about his successful operations, pre and post photographs of his patients and his qualifications including detailed resume and location of offices.
