What is WiFi and How Does it Work ?

WiFi is a technology that uses radio waves to provide network connectivity. A WiFi connection is established using a wireless adapter to create hotspots - areas in the vicinity of a wireless router that are connected to the network and allow users to access internet services. Once configured, WiFi provides wireless connectivity to your devices by emitting frequencies between 2.4GHz - 5GHz, based on the amount of data on the network. 

This article will introduce you to the basics of WiFi so that you may have a better understanding of the worldwide phenomenon that provides you with your internet access. 

What Does WiFi Stand For?

You may be surprised to hear that many people don't actually know that WiFi is an abbreviated term. Even those who do don't always know what WiFi stands for. There are a number of theories about what the term means, but the most widely accepted definition for the term in the tech community is Wireless Fidelity. 

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An Introduction to WiFi

Wireless technology has widely spread lately and you can get connected almost anywhere; at home, at work, in libraries, schools, airports, hotels and even in some restaurants. 

Wireless networking is known as WiFi or 802.11 networking as it covers the IEEE 802.11 technologies. The major advantage of WiFi is that it is compatible with almost every operating system, game device, and advanced printer. 

How WiFi Works

Like mobile phones, a WiFi network makes use of radio waves to transmit information across a network. The computer should include a wireless adapter that will translate data sent into a radio signal. This same signal will be transmitted, via an antenna, to a decoder known as the router. Once decoded, the data will be sent to the Internet through a wired Ethernet connection. 

As the wireless network works as a two-way traffic, the data received from the internet will also pass through the router to be coded into a radio signal that will be received by the computer's wireless adapter. 

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WiFi Frequencies

A wireless network will transmit at a frequency level of 2.4 GHz or 5GHz to adapt to the amount of data that is being sent by the user. The 802.11 networking standards will somewhat vary depending mostly on the user's needs. 

The 802.11a will transmit data at a frequency level of 5GHz. The Orthogonal Frequency-Division Multiplexing (OFDM) used enhances reception by dividing the radio signals into smaller signals before reaching the router. You can transmit a maximum of 54 megabits of data per second. 

The 802.11b will transmit data at a frequency level of 2.4GHz, which is a relatively slow speed. You can transmit a maximum of 11 megabits of data per second. 

The 802.11g will transmit data at 2.4GHz but can transmit a maximum of 54 megabits of data per second as it also uses an OFDM coding. 

The more advanced 802.11n can transmit a maximum of 140 megabits of data per second and uses a frequency level of 5GHz. 

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What are Hotspots?

The term hotspot is used to define an area where WiFi access is available. It can either be through a closed wireless network at home or in public places such as restaurants or airports. 

In order to access hotspots, your computer should include a wireless adapter. If you are using an advanced laptop model, it will probably include a built-in wireless transmitter already. If it doesn't, you can purchase a wireless adapter that will plug into the PCI slot or USB port. Once installed, your system should automatically detect the WiFi hotspots and request connection. If not, you should use a software to handle this task for you. 

How To Create Restore In Windows 10 ?

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HOW TO CREATE RESTORE POINT IN WINDOWS 10 ?

Having your PC compromised in any way can be damaging and can cause a lot of stress for you. Simple tasks such as installing a new app, driver, or update can create issues with your computer, and you may want to undo the changes you made to revert your PC back to normal. This is where creating a restore point in Windows 10 can be beneficial for you.

Restore Point allows you to essentially save a ‘snapshot’ of your computer at a given moment which is then stored as a restore point. If your computer Somehow starts working awkwardly or becomes laggy, you can then revert to this restore point that you saved and your PC will go back to how it was at that time.

IMPORTANCE OF CREATING RESTORE POINT IN WINDOWS 10 PC

Most of us had encountered a problem here or there with Windows before and wished that we could undo changes and bring back our PC to how it was before. By creating a restore point on a Windows PC, you can effectively bring back your computer to a previously saved state if you think that its current state is compromised.

So you are basically going back in time to how things once were instead of your PC operating in its current capacity that you’re unhappy with. It should be noted that if you have installed any programs after a restore point has been created, that once a restore is performed those programs will not be there anymore.

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HOW TO CREATE A RESTORE POINT IN WINDOWS 10

Step 1: Open up Control Panel on your PC. You can access it by either using your computers built-in search function, through the Quick Access Menu, or by using Cortana

Step 2: Open up the System and Security section and then click on System. Now from the left pane click on System Protection.

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Make sure that the Windows Drive (usually C)has Protection set to On by selecting the drive and clicking on Configure.

Step 3: Click on the Create button to create a system restore point. You can write a description so that you can remember in future why this restore point is important to you.

HOW TO USE A RESTORE POINT IN WINDOWS 10

Step 1: Open up Control Panel on your PC as mentioned above.

Step 2: Go into the System and Security section then open up System Protection.

Step 3: Click on System Restore, and you will see a list of available restore points to choose from.

Step 4: Click on Next and then Finished to begin a system restore.

That is it Folks, you just learned how to Create a restore point on your PC. If you do not have restore point created already, then you should go ahead and Create one just now. You never know when a program or system files can make your computer behave like it is good for nothing.

Having a Restore point can help windows users, and you always have an option to take your PC back in time when your System was working like butter.

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Flipkart Big Shopping Days 16th july to 19th july

Flipkart Big Shopping Days from July 16: Deals and discounts on Pixel 2, iPhone, etc

Flipkart Big Shopping Days deals and discounts on Google Pixel 2, Apple iPhone, and more mobiles. Here is a look at top deals.

             Flipkart Big Shopping Days 

Flipkart Big Shopping Days will hosted from July 16 to July 19. During the three-day sale period, the e-commerce site will offer deals on mobiles, electronic products, TV and appliances, fashion products, and more. In addition, SBI credit card users can avail 10 per cent instant discount. No cost EMI as well as offer from Bajaj Finserv will have also been listed.

Under exchange offers, users will get a minimum of Rs 500 off their old smartphone. Flipkart’s complete mobile protection package will also be available for as low as Rs 49. The site is yet to reveal all deals, but it has put out a sneak peek ahead of the sale. The e-commerce site will host rush hour deals from 4 pm to 6 pm IST on all four days of the sale.

                 Google Pixel 2 (128GB) 

                  

will be available with guaranteed Buyback Value up to Rs 37,000. This includes extra Rs 3,000 off on exchange and cashback of Rs 8,000. Pixel 2 can be bought at Rs 53,999 in two colour options – Just Black and Clealry White. Flipkart will offer deals on Apple iPhone models as well, which the e-commerce site is yet to reveal. 

In addition, Infinix Hot 6 Pro at Rs 7,999 will on sale from July 17 at 12 midnight.

Specifications of Infinix Hot 6 Pro include5.99-inch FullView display, 13MP+2MP rear cameras, Snapdragon 425 processor, 3GB RAM, 32GB storage, and 4,000mAh battery. As part of launch offers, Reliance Jio is offering Rs 2,200 cashback on recharge with Rs 198 or Rs 299 per month. Other offers include Hungama play 180 days free subscription and no cost EMI from Rs 889 per month.

More Tech News :- WhatsApp is testing 'Mark as Read' feature, here's what it means for you

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WhatsApp is testing 'Mark as Read' feature, here's what it means for you

NEW DELHI: Facebook-owned Whatsapp is doing everything to make the user experience better. The company recently introduced various new features to group video calling, forwarded message feature and others. It seems that company is not done yet and is working to introduce a new feature called ‘Mark as read’ for notifications.

According to a Twitter account that tracks changes in WhatsApp’s beta builds states that the WhatsApp beta version for the Android users consists of this feature. As per the website the new feature will enable the users to mark incoming messages as read directly from the notification drawer.

The feature will save a lot of time of the user as now they will be able to mark read any message without opening it. The Twitter account further highlights that the feature is not yet made available in the beta version as it needs some improvements. The screenshots shared show the “Mark as Read” button placed next to the “Reply” button on the notifications drawer.

Along with this, WhatsApp is also said to be working on adding a “Suspicious link” detection feature which will warn the users about any suspicious links that they have received from any sender. The company is planning this feature in order to fight against the spread of fake news.

Once this feature is rolled-out, the moment you receive a link to a website on WhatsApp, the app will do a background check of the link to the website and will alert you if it finds something fishy. “When WhatsApp detects a suspicious link, the message is marked with a red label,” says a report in WaBetaInfo. The red label will indicate that either it’s spam or phishing link or is redirecting to a fake news website. Sometimes, third-party links can redirect to malicious website that download malware in the background

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What is the Internet ?

Introduction

The Internet is an increasingly important part of everyday life for people around the world. But if you've never used the Internet before, all of this new information might feel a bit confusing at first.

Throughout this tutorial, we'll try to answer some basic questions you may have about the Internet and how it's used. When you're done, you'll have a good understanding of how the Internet works, how to connect to the Internet, and how to browse the Web.

What is the Internet?

The Internet is a global network of billions of computers and other electronic devices. With the Internet, it's possible to access almost any information, communicate with anyone else in the world, and do much more.

You can do all of this by connecting a computer to the Internet, which is also called going online. When someone says a computer is online, it's just another way of saying it's connected to the Internet.

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What is the Web?

The World Wide Web—usually called the Web for short—is a collection of different websites y ou can access through the Internet. A website is made up of related text, images, and other resources. Websites can resemble other forms of media—like newspaper articles or television programs—or they can be interactive in a way that's unique to computers.

The purpose of a website can be almost anything: a news platform, an advertisement, an online library, a forum for sharing images, or an educational site like us!

Once you are connected to the Internet, you can access and view websites using a type of application called a web browser. Just keep in mind that the web browser itself is not the Internet; it only displays websites that are stored on the Internet.

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How does the Internet work?

At this point you may be wondering, how does the Internet work? The exact answer is pretty complicated and would take a while to explain. Instead, let's look at some of the most important things you should know.

It's important to realize that the Internet is a global network of physical cables, which can include copper telephone wires, TV cables, and fiber optic cables. Even wireless connections like Wi-Fi and 3G/4G rely on these physical cables to access the Internet.

When you visit a website, your computer sends a request over these wires to a server. A server is where websites are stored, and it works a lot like your computer's hard drive. Once the request arrives, the server retrieves the website and sends the correct data back to your computer. What's amazing is that this all happens in just a few seconds! 

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Other things you can do on the Internet

One of the best features of the Internet is the ability to communicate almost instantly with anyone in the world. Email is one of the oldest and most universal ways to communicate and share information on the Internet, and billions of people use it. Social media allows people to connect in a variety of ways and build communities online.

There are many other things you can do on the Internet. There are thousands of ways to keep up with news or shop for anything online. You can pay your bills, manage your bank accounts, meet new people, watch TV, or learn new skills. You can learn or do almost anything online.

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What is Facebook ?

What is Facebook?

Facebook is a social networking site that makes it easy for you to connect and share with your family and friends online. Originally designed for college students, Facebook was created in 2004 by Mark Zuckerberg while he was enrolled at Harvard University. By 2006, anyoneover the age of 13 with a valid email address could join Facebook. Today, Facebook is the world's largest social network, with more than 1 billion users worldwide.

Why use Facebook?

Have you ever wondered why people like using Facebook? After all, there are already a lot of other ways to communicate online, such as email, instant messaging, and so on. What makes Facebook unique is the ability to connect and share with the people you care about at the same time.

For many, having a Facebook account is now an expected part of being online, much like having your own email address. And because Facebook is so popular, other websites have worked to integrate Facebook. This means you can use a single Facebook account to sign in to different services across the Web.

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How does Facebook sharing work?

Facebook allows you to sendmessages and post status updates to keep in touch with your friends and family. You can also share different types of content, like photos and links. But sharing something on Facebook is a bit different from other types of online communication. Unlike email or instant messaging, which are relatively private, the things you share on Facebook are more public, which means they'll usually be seen by many other people.

While Facebook offers privacy tools to help you limit who can see the things you share, it's important to understand that Facebook is designed to be more open and social than traditional communication tools. We'll talk more about sharing and controlling your privacy in our lessons on Understanding Facebook Privacy and Adjusting Your Privacy Settings.

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What is a Computer ?

A computer is an electronic device that manipulates information, or data. It has the ability to store, retrieve, and process data. You may already know that you can use a computer to type documents, send email, play games, and browse the Web. You can also use it to edit or create spreadsheets, presentations, and even videos.

Hardware vs. software

Before we talk about different types of computers, let's talk about two things all computers have in common: hardware and software.

• Hardware is any part of your computer that has a physical structure, such as the keyboard or mouse. It also includes all of the computer's internal parts, which you can see in the image below.
  
  

• Software is any set of instructions that tells the hardware what to do and how to do it. Examples of software include web browsers, games, and word processors. Below, you can see an image of Computer Software.

• 
  
• Everything you do on your computer will rely on both hardware and software. For example, right now you may be viewing this lesson in a web browser (software) and using your mouse (hardware) to click from page to page. As you learn about different types of computers, ask yourself about the differences in their hardware. As you progress through this tutorial, you'll see that different types of computers also often use different types of software.

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What are the different types of computers?

When most people hear the word computer, they think of a personal computer such as a desktop or laptop. However, computers come in many shapes and sizes, and they perform many different functions in our daily lives. When you withdraw cash from an ATM, scan groceries at the store, or use a calculator, you're using a type of computer.

                  Computer Types

 

       1. Desktop Computers :-Many people use desktop computers at work, home, and school. Desktop computers are designed to be placed on a desk, and they're typically made up of a few different parts, including the computer case, monitor, keyboard, and mouse.

        2. Laptop   Computers :- The second type of computer you may be familiar with is a laptop computer, commonly called a laptop. Laptops are battery-powered computers that are more portable than desktops, allowing you to use them almost anywhere.

        3. Tablet     Computers :- Tablet computers—or tablets—are handheld computers that are even more portable than laptops. Instead of a keyboard and mouse, tablets use a touch-sensitive screen for typing and navigation. The iPad is an example of a tablet.

        4. Severs    Computers:- A server is a computer that serves up information to other computers on a network. For example, whenever you use the Internet, you're looking at something that's stored on a server. Many businesses also use local file servers to store and share files internally.

Other types of computers

Many of today's electronics are basically specialized computers, though we don't always think of them that way. Here are a few common examples.

• Smartphones: Many cell phones can do a lot of things computers can do, including browsing the Internet and playing games. They are often called smartphones.
• Wearables: Wearable technology is a general term for a group of devices—including fitness trackers and smartwatches—that are designed to be worn throughout the day. These devices are often calledwearables for short.
• Game consoles: A game console is a specialized type of computer that is used for playing video games on your TV.
• TVs: Many TVs now include applications—or apps—that let you access various types of online content. For example, you can stream video from the Internet directly onto your TV.

PCs and Macs

    

Personal computers come in two main styles: PC and Mac. Both are fully functional, but they have a different look and feel, and many people prefer one or the other.

              1.  PC:- Personal Computer 

This type of computer began with the original IBM PC that was introduced in 1981. Other companies began creating similar computers, which were called IBM PC Compatible(often shortened to PC). Today, this is the most common type of personal computer, and it typically includes the Microsoft Windows operating system.

                         2.Macs 

The Macintosh computer was introduced in 1984, and it was the first widely sold personal computer with a graphical user interface, or GUI (pronounced gooey). All Macs are made by one company (Apple), and they almost always use the Mac OS X operating system.

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