Tuesday, June 9, 2009
Monday, June 8, 2009
Pc tools and Help
so you can find sub menues in this tab and also you can search in the blog.
any queryies or suggestions write to us at rana.ravindra1@gmail.com
Wi-Fi
Wi-Fi : for certified products based on the IEEE standards(WLAN) and Wi-Fi). This certification warrants interoperability between different wireless devices.
The term Wi-Fi often is used by the public as a synonym for wireless Internet (WLAN); but not every wireless Internet product has a Wi-Fi certification, which may be because of certification costs that must be paid for each certified device type.
How Does GPS Work?
| Global Positioning System satellites transmit signals to equipment on the ground. GPS receivers passively receive satellite signals; they do not transmit. GPS receivers require an unobstructed view of the sky, so they are used only outdoors and they often do not perform well within forested areas or near tall buildings. GPS operations depend on a very accurate time reference, which is provided by atomic clocks at the U.S. Naval Observatory. Each GPS satellite has atomic clocks on board. | |
Each GPS satellite transmits data that indicates its location and the current time. All GPS satellites synchronize operations so that these repeating signals are transmitted at the same instant. The signals, moving at the speed of light, arrive at a GPS receiver at slightly different times because some satellites are farther away than others. The distance to the GPS satellites can be determined by estimating the amount of time it takes for their signals to reach the receiver. When the receiver estimates the distance to at least four GPS satellites, it can calculate its position in three dimensions. | |
| There are at least 24 operational GPS satellites at all times. The satellites, operated by the U.S. Air Force, orbit with a period of 12 hours. Ground stations are used to precisely track each satellite's orbit. | |
| Determining Position A GPS receiver "knows" the location of the satellites, because that information is included in satellite transmissions. By estimating how far away a satellite is, the receiver also "knows" it is located somewhere on the surface of an imaginary sphere centered at the satellite. It then determines the sizes of several spheres, one for each satellite. The receiver is located where these spheres intersect | |
How to the Human Resources ?
2.It is not to the business then not powerfull this business
3.This department control to every part to business and every thing to employe and management.
4. Its understand to all thing empolye salary .which garade to provide to employe amount the salary.
5. There are the example of humam body part .the main part of human body is back bon is not to the human then human is not to walk then is same thing human resorece department is not then not to work any bady business.


