Tech Agama

Google's search engine is a powerful tool,making it practically possible to find the information you need when you browse the Web. Google uses automated programs called spiders or crawlers, which finds and retrieves pages on the web and hands them off to the Google indexer. Google has a large index of keywords This index is sorted alphabetically by search term, with each index entry storing a list of documents in which the term appears and the location within the text where it occurs. This data structure allows rapid access to documents that contain user query terms.To improve search performance, Google ignores (doesn’t index) common words called stop words (such as the, is, on, or, of, how, why, as well as certain single digits and single letters) .How Google ranks search results , determines the order Google displays results on its search engine results page (SERP). Google uses a trademarked algorithm called PageRank, which assigns each Web page a relevancy score. A Web pag...

F1         :Help F2         :Rename the selected item F3         :Search for a file or folder F4         :Display the address bar list in File Explorer F5         :Refreshes the current window. F6         :Moves among panes in a window F10        :Activates the Menu bar     CTRL+C                       : Copy CTRL+X                       : Cut CTRL+V                       : Paste CTRL+Z    ...

Mobile number portability (MNP) enables mobile telephone users to retain their mobile telephone numbers when changing from one mobile network operator to another. Mobile number portability is implemented in different ways across the globe. The International and European standard is for a customer wishing to port his/her number to contact the new network (recipient), which then sends the number portability request (NPR) to the current network (donor). This is known as "recipient-led" porting. The UK and India are the only exceptions to implement the donor-led system. The customer wishing to port his/her number is required to contact the donor to obtain a code (Porting Authorisation Code (PAC) in the UK and Unique Porting Code (UPC) in India) which is then given to the recipient network. The recipient continues the porting process by contacting the donor with porting code. This form of porting is known as "donor-led". A significant technical aspect of MNP is relat...

The number of bits in a processor refers to the size of the data types that it handles and the size of its register .A register is a small amount of memory available to the processor in order to speed up its operations.Thus,a 64-bit processor can address  a larger physical memory locations and hence,can handle larger amount of RAM, than a 32-bit processor. Another difference is the speed .A 64-bit processor can perform more number of calculations per second than a 32-bit processor.Windows 95, 98, and XP are 32-bit operating systems and Windows Vista, Windows 7, and Windows 8 are 64-bit. A  64-bit machine can have a 32-bit or 64-bit operating systems installed on it whereas a 32-bit machine cannot have a 64-bit operating system installed. Although it is possible for a 32-bit software to run on a 64-bit machine,a 64-bit software cannot run on a 32-bit machine. How to find out whether a computer is running a 32-bit or 64-bit version of windows? Right click My Compute...

              'A fatal exception XY has occured at xxxx:xxxxxxxx' What is it? A fatal exception error is an error that causes a program to abort,returning the user to the operating system.When program encounters an exception that is invalid or unknown,fatal exception error(fatal 0E) is thrown.It mainly occurs during the computer's booting process,shutdown process or while trying to launch a program in windows.The processor exception(XY value) ranges from  00 to 0F. xxxx:xxxxxxxx represents the 32-bit address where the actual exception has occured. 00-Divide fault 02-NMI interrupt 04-overflow trap 05-bounds check fault 07-coprocesser not available 08-double fault 09-coprocesser segment overrun 0A-invalid task state segment 0B-Not present fault 0C-stack fault 0D-general protection fault 0E-page fault 10-coprocessor error fault 11-Alignment check fault When it occurs? Attempting an illegal instruction or operation accessin...

The curiosity "What is going at home when your away?" is the main intention behind developing home security systems,which if automated makes things simpler. Angee is an autonomous home security system, which prevents someone from breking into your house! Angee knows when you come and go, so it can fully automate security, also monitoring every entrance point around the perimeter of your home.Motion sensors comes handy for complete sensing. Angee can be controlled and monitored using your smartphones. With two-step authentication-at the door identification and voice recognition, it ensures safety.  your Voice is usedas backup when  phone is dead. It comes with a rotation camera enabling 360 degree view and a 10 hour battery. It also allows communication and recording,sharing and streaming of videos. The all new Angee ensures a stress free and safe living!!

The U.S. military developed and implemented GPS satellite network as a military radio-navigation system to figure out the exact position on the earth. It’s made up of three parts: satellites, ground stations, and receivers. GPS is  a constellation of 27 Earth-orbiting satellites (24 in operation and three extras in case one fails). Each satellite is built to last about 10 years. Each one transmits information about its position and the current time at regular intervals.These satellites make two complete rotations around the globe everyday such that at any point of time atleast four satellites are visible to the receiver. The basis of GPS is "trilateration".Trilateration is a method of determining the relative positions of objects using the geometry of triangles.In order to make this simple calculation, the GPS receiver has to know the location of at least three satellites and the distance between our receiver and each of those satellites. The signals, moving at the speed...