Facebook

              Facebook is very popular social networking site among all. It has been doing progress since it was developed but the most traffic of Facebook was seen from 2009 AD. Facebook is providing many of there features and it is still in progress. Till now we can use different features like games, video chatting, earning money, sharing our knowledge etc.Some of the interesting features are:  

Messaging

A new Messaging platform, codenamed "Project Titan", was launched on November 15, 2010. Described as a "Gmail killer" by some publications, the system allows users to directly communicate with each other via Facebook using several different methods (including a special email address, text messaging, or through the Facebook website or mobile app)—no matter what method is used to deliver a message, they are contained within single threads in a unified inbox. As with other Facebook features, users can adjust from whom they can receive messages from—including just friends, friends of friends, or from anyone.

Aside from the Facebook website, Messages can also be accessed through the site's mobile apps, or a dedicated Facebook messanger app,

Voice calls

Since April 2011, Facebook users have had the ability to make live voice calls via Facebook Chat, allowing users to chat with others from all over the world. This feature, which is provided free through T-Mobile's new Bobsled service, lets the user add voice to the current Facebook Chat as well as leave voice messages on Facebook.

Video calling

On July 6, 2011, Facebook launched its video calling services using Skype as its technology partner. It allows one-to-one calling using a Skype rest API.

Following

On September 14, 2011, Facebook added the ability for users to provide a "Subscribe" button on their page, which allows users to subscribe to public postings by the user without needing to add them as a friend.In conjunction, Facebook also introduced a system in February 2012 to verify the identity of certain accounts. Unlike a similar system used by Twitter, verified accounts do not display a special verification badge, but are given a higher priority in a user's "Subscription Suggestions".

In December 2012, Facebook announced that due to user confusion surrounding its function, the Subscribe button would be re-labeled as a "Follow" button—making it more similar to other social networks with similar functions.

Privacy

To allay concerns about privacy, Facebook enables users to choose their own privacy settings and choose who can see specific parts of their profile.The website is free to users, and generates revenue from advertising, such as banner ads.Facebook requires a user's name and profile picture (if applicable) to be accessible by everyone. Users can control who sees other information they have shared, as well as who can find them in searches, through their privacy settings.

According to comScore, an internet marketing research company, Facebook collects as much data from its visitors as Google and Microsoft, but considerably less than Yahoo!.In 2010, the security team began expanding its efforts to reduce the risks to users' privacy, but privacy concerns remain.On November 6, 2007, Facebook launched Facebook Beacon, which was an ultimately failed attempt to advertise to friends of users using the knowledge of what purchases friends made. As of March 2012, Facebook's usage of its user data is under close scrutiny.

Disadvantages

           Since Facebook is the leading  websites, this sites is been tried to hack by many people

 in this world sitting in different corners. And many has already succided in their work. So

 Facebook should increase it security in order to mentain it's popularity.

How to make our computer free from computer virus without any cost?

          We know that the computer viruses are the most problem creating object in present computer generation. Different people pays high cost and buys different antivirus but we can save our computer from virus attack without any cost. The requirement for the security of our computer are:
1) Kaspersky virus removal tools
2) Avira virus removal tools
3) microsoft malware removal tools

 These are the best tools required for the security of our computer. And these tools should be used in following ways:
1) firstly go in "run" type "msconfig" and click on "startup" and disable every thing which disables every program, virus too which will run automatically when the window starts.
2)then restart computer and press F8 bottom and select "safe mode"
3)now your computer will run in safe mode and insert your portable disk where you have kept those virus removal tools
4)now operate each and every virus removal tools one by one which helps to search and remove viruses from your computer.
5)after scanning with all virus removal tools your computer will be almost totally free form computer viruses and now you can use your computer in smooth way.

Note:You should have latest version of virus removal tools for this process so that latest virus are detected and removed.

resistor

RESISTOR

It is a component which is used to drop current in electronic curcit. It is easily available in market in different types according to your needs. their types are

1.simple resistor

2.high watt resistor

3.variable resistor

 measurement

1000ohms = 1k ohms

1000k ohms = 1mega ohms

formula

v = IR 

WHICH IS CALLED OHMS LAW TO CALCULATE THE REQUIREMENT OF RESISTOR IN A CIRCUIT.

COLOR CODE

BLACK-0

BROWN-1

RED-2

ORANGE-3

YELLOW-4

GREEN-5

BLUE-6

PURPLE-7

GRAY-8

SILVER-0.01

GOLD-0.1

 

Latest Nvidia Graphic card

Nvidia graphic card is one of the leading brand in graphic card.It has been launching graphic cards to meet users requirement. Till now they have launched 3 series of graphic card.They are

1.gtx series

2.gts and gt series

3.Geforce

In these 3 series gtx is the latest one with many powerful features such as advanced graphic settings,direct hdmi port, double clock time, up to 6gb vram,and the latest gtx titan graphic card meets the criteria of super computer in affordable price which has made it a weapon for gamers and graphic designers.So hurry up and go get the latest nvidia graphic card.

Hack a computer password in easy way?

           We know that hacking is being very common in our world now a days so in this article i am going to so you the simple way to hack other computer password. The steps for this work are:
1) open CMD prompt
2) type "net user username * "
3) in place of username we should write name of user
 for example:
        net user Rohan *
where Rohan is user name
4) then you are asked to put new password and you can put any password you like or just hit enter bottom twice and the work is done      

How can we solve frequent problem in computers ourselves ?

1. Display problem
         In order to fix display play problem you should follow following steps in serial way:
         a) make sure that VGA wire is tightly fit if keyboard led in on.
         b) if the problem is not fixed RAM should be checked whether it is loose or not if loose we have to put
             it tightly.
         c) if the problem is not fixed Power supply four pin port should be properly attached with motherboard
         d) if the problem is not fixed BIOS reset should be done which means taking the battery of
             motherboard for 4-5 minute of time and put it in it's own place
         e) if the problem is not fixed power supply should be replaced and checked
         f)  if the problem is not fixed check the processor goes on over heat or not which problem of CPU fan
         g) if the problem is not fixed finally the motherboard should be changed.

2.Heating problem
         This problem is seen when the micro processor goes over heating so in order to fix this problem we have to follow below steps serially:
         a) The fan must be tightly fitted
         b) if the problem is not fixed the coolant of CPU fan should be used under CPU fan
         c) if the problem is not fixed finally the motherboard should be changed

3. Automatic shut down of PC
         In order to fix this problem following steps should be followed:
         a) this problem frequently occurs due to the loose fixed CPU fan so firstly we have to make sure that
             the CPU fan is fitted tightly. 
         b) if the problem is not fixed then we have to know that processor is damaged

4.Boot failure from Hard disk
         In order to fix this problem following steps should be followed:
         a) this problem occurs often due to the fault of data cable so we have check the data cable
         b) if the problem is not fixed there may be the fault of  power cable which is connected from power
             supply
         c) if the problem is not fixed there also may be the problem of BIOS setup which can be fixed easily
             by BIOS setup reset
         d) if the problem is not fixed then there is OS problem so we have to fix this problem by using boot
             able CD/DVD