Task 1: Data Communication

In 1809, a crude telegraph was invented in Bavaria by Samuel Soemmering. He used 35 wires with gold electrodes in water and at the receiving end 2000 feet the message was read by the amount of gas caused by electrolysis. In 1828, the first telegraph in the USA. was

Synchronous is an adjective that describes an event that is coordinated in time. Synchronous communications works in a way that both hosts will be communicating consistently to continue that communication. By this I mean, that there should be continuous stream of data flow between both hosts to keep that communication going. An example of this is a phone call, when one host (person) communicates with another host, both hosts will have an active connection between them during Synchronous communication. The first host can send a packet of data (talk) while the second host will receive that data (Listen) simultaneously and then the first host will receive the data while the second host is sending the data simultaneously. This communication is used commonly used in telecommunications such as; phone calls, Skype calls etc. Synchronous communication is used in these cases instead of Asynchronous because these things require both hosts be active at the same time. Synchronous communication is also used for things such as streaming on Netflix which requires both the server and client accessing Netflix to be active. Peer to peer transfer (sending a file directly to a friend over the internet) also requires that both hosts be active, if only one host was active then the file wouldn’t be able to be

Data communication is the exchange of data between a sender and a receiver of the information. The components data communication has to have, to be a data communication are:

The invention of the telegraph in 1837 was a cornerstone for many of our modern technological

The telegraph set the stage for many future inventions including many of the present inventions. Prior to the invention

First of all, the telephone has a long history of impacting society from 1876 to 2017. The telephone began from Alexander Graham Bell it was the bell telephone. Telephones began as large, clunky devices capable of transmitting, and receiving voice messages over short distances. The telephone evolved into lighter transportable cellular devices capable of enabling communications over large distances. Today’s mobile phones would be a dream to the 1900s.

First, it gave people more information. Before the telephone, information had to come to people from books and the daily paper. People also had to depend on other people's memories and travel patterns. Now, people could find out about new news anytime, just by grabbing their phone and dialing a number. Second, the telephone could now be used for emergency services. In fact, the first telephone call was Alexander Graham Bell calling his assistant to ask for help. Lastly, the telephone helped people connect with each other more. Companies promoted the telephone to many organizations to increase efficiency, spare time, and have their customers in awe. A handbook for telephone salesmen from 1904 recommends for customers to get a telephone by giving them these

All in all, the telephone is an essential tool in home and businesses. It’s most dramatic effect was on writing and teaching. The telephone was invented by Alexander Graham Bell on February 12, 1877 in a New York patent office. (Lewis, 31-33) There were many steps in creating this great invention but it was all worth it. America and also the whole world now has a way of communication that revolutionized their practices as well as their lives.

The first words ever said on telephone were "Mr. Watson--come here--I want to see you.” Alexander Graham Bell invented a machine that enables people to communicate easily. This everyday device is called the telephone. Bell created the telephone on March 10, 1876. Ever since then, it impacted the world tremendously. The invention of the telephone had many advantages. For instance, it turned into an all purpose tool used in various homes, businesses, and in schools. In addition, the phone provided many civilians the feeling of security. The telephone became a useful gadget used from all over the world, thanks to Alexander Graham Bell.

409). Asynchronous interactions can have a delay, especially with email. Although more popular today, according to various articles published via Google, email began in the early 1990’s and more companies provided commercial email in the mid to late nineties. Teams use it ferociously today and expect an answer. However, as stated, it can be asynchronous and hold up progress. Nothing beats live interaction even with a phone call. Moreover, simpler forms for expected immediacy can prove to be calming for desired results, like texting. However, video texting apps or regular texting still does not require an immediate response as meetings or video chat. Synchronous forms have proven over time to work best in with larger groups; i.e. meetings or conferences.

Polling works for cases where the exact interval of message availability is known, however in most real-time application, the messages often have limited predictability.

Asynchronous communication occurs when there is a delay between the sending and the receipt of the message. Asynchronous communication has been employed by people since before the development of writing. From the time an object of meaning was left for another to find and interpret, humans have been using asynchronous communication. Paintings on cave walls, impressions in clay tablets, hieroglyphics carved in stone, words written on paper are all intended

Alexander Graham Bell is probably best known for his invention of the telephone. In 1870, he worked with his father as a speech therapist for the deaf in Brantford, Ontario and this led him to work with how sound was transmitted and received (thecanadianencyclopedia.ca). The word telephone comes from the Greek words meaning “far-sound” (Ross, 24). The telegraph itself was a device created by a number of different scientists which involved passing electrical signals down a wire (Ross, 10). It was this telegraph that led Bell to first begin experiments for the telephone in 1872 (World Book Encyclopedia, 240). Originally, Bell did not try the transmission of speech electrically; however, on a single wire he attempted to send multiple telegraph messages all at once. (World Book

4. Communication at a high speed: Participants staying at different places within a country or outside the country can establish direct communication through video confererncing.The speed of communication is very high and the

For Ex: Suppose you are a student and have access to a portal which provides the functionality for reading massive journals content through API , That API is a http request which request for required data and render the relevant info to end user. Now if you are performing same operation with synchronous server and if the targeted journal if is 5 GB in terms of size, then synchronous server will halt further execution of the code block and further statements/expressions will not executed until the server do not read all the 5 GB data