Bluetooth technology Essay Example | Topics and Well Written Essays - 1500 words

Bluetooth technology - Essay Example The Bluetooth technology works across a secure and unlicensed short-range radio frequency. Bluetooth technology sends information within our own personal space which is known as our Personal Area Network (PAN) at distances of up to 10 meters. Bluetooth is also known as the IEEE 802.15.1, an industrial standard for wireless PANs (personal area network), since it can be used in smaller offices with few employees (Peter, 2006). A product having Bluetooth facility means that it some hardware or small computer chip along with some software that lets one product connect wirelessly to another using the Bluetooth technology. History of Bluetooth: The Bluetooth technology was formulated in 1994 by the Engineers of a company called â€Å"Ericsson†, a Swedish company. The reason behind this invention was to eradicate the rummage in homes and offices. In 1998, Bluetooth Special Interest Group (SIG) was developed and its founding members were Ericsson, Intel, IBM, Nokia and Toshiba. The mo tive behind was to connect their products and also the organization devoted its time in maintaining the Bluetooth technology. Within six months success of the Bluetooth technology many other companies joined in this new invention. Since then the Bluetooth technology has boomed and has been adapted by many other companies. ... the King’s work, Bluetooth is all about connecting and communicating in an uninterrupted single flow allowing different devices from cell phones to automobiles to communicate and network with each other. The Bluetooth Logo is established on the H and B of Harold's name. How the technology works: Initially the range of Bluetooth device brooded over 5meters but now it can attain a range of 10meters after expanding into 700-800kb bandwidth. The transmission frequency range for Bluetooth is between 2.4 and 2.4835 GHz with a maximum transfer speed of 2 Mbps per second whereas at the beginning it was around 1Mbps per second and the frequency range was 2GHz. Bluetooth technology functions in the unlicensed industrial, scientific and medical (ISM) band. It uses a spread spectrum, frequency hopping, full duplex signal at a nominal rate of 1600 hops/sec (Justin, 2004). The network of Bluetooth contains a powerful topology PAN (personal area network) also known as piconet. These piconets are established dynamically and automatically. Nodes are organized in small groups of piconets. Every piconet has a leading node known as master and other nodes in a piconet are referred as slaves. A node can belong to a multiple of piconets, and such a node is called as a bridge. Piconet contains a minimum of two and a maximum of eight peer devices. The devices will communicate using protocols that are part of the specification. Slaves do not directly communicate with each other but instead rely on the master as a carrying node. Bluetooth provides a half-duplex communication channel. Communication between nodes in different piconets involves the bridge nodes. A bridge node can’t be active in more than one piconet at a time. It is active in one piconet while being deposited in others. Data

The Meaning of July Fourth for the Negro Essay Example | Topics and Well Written Essays - 250 words

The Meaning of July Fourth for the Negro - Essay Example This remark brings with it, and an emotional appeal of sympathy from his listeners and they are made to see the sincerity of the utterances that will follow. Mr Douglas uses Toulmin as his method of argument. Great Britain is mentioned as the colonial power  from which  the United States liberated themselves. He frowns upon the mind-set of their colonisers towards their subjects and refers to those as the disastrous times. This he does by bringing to light how the British put restraints and limitations on them because they saw it fit to keep their liberties in check. It  strips their colonisers of their credibility. He seeks pardon for any imperfections that may be detected in his speech and attributes them to his level of education and hastiness that may have been triggered by the magnitude of the occasion. It, therefore, brings about a logical appeal which he seconds with a follow up remark when he refers to the fourth of July as the birth date of the nation. It symbolises a new dawn with which the past injustices that were perpetrated by their colonial masters are gazed upon as a part of a history that has shaped the nation of