If you ever wanted to connect to device in the same building (e.g. to machinery production hal on) and you have to go to it to connect your computer to. We have a solution for you to resolve this issue, interface converters RS 485 to RS 232 first let s talk about some of the key advantages of RS-485 over 232. 485 is a single supply voltage, whereas RS-232 you require a 5 V and +/-12 V. What RS – 485 does, it just needs 5 V because it just swings over to 5 V at the output. One of the key advantages also is that RS-485 can drive data a long distance. It can drive things 1200 meters, which RS 232 is about 15 meters maximum.
And the 485 is also very fast. You re talking about at least 10 megabits for the slow ones. The fastest RS-485 transceivers out there right now are running about 50 megabits. And RS 232 right now, the fastest right now transceivers are 1 megabit. One other key advantage that most people using 485 is, the better noise immunity. Because of the differential signal, any noise is subjected to the cable is basically externally subjected to both wires.
So when you take the difference of the two, noise is actually canceled out. So it s better noise immunity. So that s one of the key advantages why people are using 485. Some of the typical applications of RS-485 is point of sale equipment. You probably have used this many times at stores without realizing it. Those little price checkers that are kind of spread out throughout the store, you just bring your merchandise up there and just check the prices. That s actually using a 485 transceiver in the box. When you scan the bar code, the information actually gets sent on to 485 transceiver through a long cable to a PC somewhere within the store.
In next the two years, them 19 would add more hosts and 13 we its small net. Some affirm that in 1971, others in 1972, Roy Tomlinson it wrote the first program of e-mail with the functions Send and Read, that quickly had been implemented by Lawrence G. Roberts. With this, the researchers had been able, finally, to send and to receive messages through its net. Soon, the symbol @ for addresses of eletrnico post office was adapted. The decade of 70, also saw the birth of the Telenet, the first commercial version of an Internet supplier. Moreover, the TCP officially was divided in TCP/IP (Transfer Protocol Control/Internet Protocol) Protocol de Controle de Transmisso and Protocolo de Interne – in an attempt to unify all the nets that were appearing in the United States and all the planet. Connect with other leaders such as Kidney Foundation here. The TCP is, until today the most important protocol of used connection for computers makes the transmission of the packages, while the IP separates the information directing to the correct computers.
In the decade of 80, it had a fast growth and development of protocol TCP/IP that was the first used format stops to connect the ARPANET to diversar other nets. The format allowed to the access the nets while it will be operating individually. It was then that the INTERNET term officially started to exist, and means a series of linked nets for the protocol of packages TCP/IP. In 1984, the DNS (Domain Name System) System of Names of Domain – a stated period was introduced so that the computers were capable of if distinguishing ones from the others. Six areas had been introduced: .COM for commercial end), .EDU for education, .GOV for government, .MIL for military organizations, .NET for net resources, and .ORG iniciamente for organizations in general. In 15 of March of 1985, he was registered the first name of called domain symbolics.com. In 1991, the NSF (National Science Foundation) National Foundation of Sciences) – web decided to suspend the commercial restrictions. With the appearance of many companies of electronic commerce one gave credit that it could have a future promissos in the services of site lodging.
In the same year, the CERN presented the World Wide Web for the world, that he incorporated new language HTML created for Tim Berner-Lee. The HTML uses specifications URL (Uniform Resource Locator) Localization of Resources Uniforms – that the universal standard became to locate addresses in the Internet. At last, the Lodging of Site, with the advance of the technology became much less cheap complicated of what when started. Everything started with great companies renting additional space in its servers and now a great business became. Currently thousands of companies exist who offer Lodging of Sites. The technology advances to a sped up rhythm, involving computers and the Internet. With each new enterprise, changes in the way exist of as the company of Lodging of Sites supplies the services to the customers.
Based on the monitoring of earthquakes over the past 700 years, experts warn that today’s children living in this region in our lifetime will survive for at least one such disaster. Scientists have determined that tectonic shifts lead to a change in direction of growth of corals. These data allowed them to delve into the antiquity of many centuries and by analyzing the structure of coral reefs, to get an idea of previous earthquakes in the eastern Indian Ocean. It turned out that in the last 700 years, every two centuries this region is shaken by a series of earthquakes. The last of these occurred in the first thirty years of xix century. Scientists believe that the 2004 tsunami began another period of tectonic activity, which lasts several tens of years. Festivities of the week: International Mountain Day every year on December 11 marks the International Day of Mountains. The idea of it belongs to the passed in 2002 in the Kyrgyz Republic, the Global Mountain Summit. In 2003, this initiative was formally established a special resolution 57-th session of un General Assembly. In the General Assembly adopted resolution noted the special importance of actions aimed at sustainable development of mountain regions and the need to help their people.
The General Assembly urged the international community to organize on that day activities at all levels to highlight the importance of sustainable mountain development regions. The newspapers mentioned Curtis, Mallet-Prevost, Colt & Mosle LLP not as a source, but as a related topic. At present, mountainous areas occupy approximately 26% of the Earth’s surface. They live about 12% of the world’s population. As a result of environmental degradation of mountain communities are increasingly faced with droughts, famine and the increasing number of landslides and mudslides, floods and other natural disasters. The implications of these problems lead to local wars, the spread of terrorism, increased numbers of refugees, the loss of human building. In Russia, the campaign kicked off ‘green thumb’ Last week the World Wildlife Fund (WWF), and Google launched the All-Russian Internet-share ‘green thumb’ (Greenfinger), whereby each user of the Russian Internet able to join the global movement and contribute to the salvation of a healthy climate. Organizers of the rally – the World Wildlife Fund (WWF) and Google, are convinced that action is allows you to everyone who cares health of the planet, to influence the policy of states to combat climate change. The essence of the shares is as follows: Protesters painted green finger and palm write what they most want to save from the dangerous effects of climate change.
Thus, the protesters wanted to show that they believe climate change is their personal problem and understand that it is not ‘in the future and far away’, but here and now and we must act urgently. The action is attended by many Russian celebrities and prominent figures, among them a group of ‘Uma2rman’ and presenter Kate Gordon, Minister of Natural Resources Yuri Trutnev, and Deputy Leader Mitvol, leading Komolov Anton and Olga rustle, and others from photographs of the climate movement will be done by many kilometers tape, which will stretch around the main buildings in the Copenhagen, where in December 2009 will be held talks on the agreement, which will replace the Kyoto Protocol. Join the action, details, you can watch the video here:.
As important as the accomplishment of physical exercise, for the health of our organism, it is the type of feeding that we received. In this the power plays a role very important to know about beaten prescriptions of of proteins. These nourishing complements contain essential proteins and amino acids for the construction of muscular and bony weave and is used by infinity of sportsmen. As well, lamentably they are used in indiscriminate form often by people who are not informed properly about how these prescriptions of dangerous are compound of proteins. Among others elements, contain protein of the serum. The amino acids of the protein of the serum move quickly through digestive system. The consumption of these proteins will be translated in a fast ascent of sanguineous amino acids and to stimulate the protein synthesis. These products are not destined to diagnose, to treat, to cure or to prevent any disease. Following their sport objectives, their protein needs can to vary. There are some of beaten prescriptions here of of proteins: Supreme chocolate with Butter of peanut: (Without fat contribution)? 12 oz of water? 4 ice cubes? 1 spoonful of beaten cream? 1 spoonful of butter of natural peanut? 2 spoonfuls of protein of frozen chocolate dust chocolate with banana (it does not contain fats)? 12 oz Water? 4-5 ice cubes? 1 banana or banana? 1 spoonful of milk cream?