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What is Wi-Fi and how it is work?

On August 14th, 2011 by Adhir Ch. Mondal | 1 Comment | Posted in Computer hardware

The term “WiFi” means Wireless Fidelity. Wi-Fi is a standard wireless connectivity in our generation. It connects multiple devices to each other with WiFi connectivity. WiFi, it is a wide area networking (WAN). WiFi, such as a computer, tablet, Smartphone, joy stick, and other digital accessories can easily connect to the internet via wireless access point. WiFi is making using IEEE 802.11 family. Over 700 million people use this connectivity. If you have a computer with WiFi device and have a wireless router then you access the internet connection without any wire. And also you get more freedom from letch of wire. Its range, data transmit speed, and its frequency is depending on the WiFi device category.

Type of Wi-Fi: the various type of WiFi is available in our generation. The WiFi are separated with its data transfer speed, range, frequency and its manufacture date.

IEEE 802.11-(a), it is a protocol name of a WiFi device. It connects other WiFi enabled device to each other. The maximum data transfer speed of this type of WiFi device upto 54Mbps and its work at 5GHz frequency. This device did not work properly, if the distance between two device getter than 20Meter that means its workable range upto 20Meter. This type of WiFi device has error detection and correction capability.

IEEE 802.11-(b) it is a protocol name of a WiFi device. It connects more than one WiFi device to each other. Its maximum raw data transfer speed upto 11Mbps and this type of device work at 2.4GHz frequency. In 2000, first this type of device appears in the market.

IEEE 802.11 (g): In 2003 the third modulation of WiFi is 802.11 (g) lunches in market, it works with 2.4 GHz frequency and its maximum data transfer rate is 54Mbps. This protocol of WiFi is faster, secure and smarter than IEEE 802.11a or IEEE802.11b.

IEEE 802.11 (n): it improves speed, range upon the previews IEEE 802.11 a, b and g. IEE 802.11 (n) work at 2.4 GHz and the lesser used 5 GHz bands. The maximum data transfer speed of this WiFi protocol is 150Mbps and its approximate workable indoor range is 70 meter. It also supports MIMO (multiple-input multiple-output) facilities.

Application of WiFi: today WiFi are use various type of electronics device such as la ptop, tablet, video game, mobile phone, router, I-pod and also use through USB adopter on desktop computer for connecting more than one device to each other. Using a WiFi wireless router, a person can connect his laptop with a WiFi router and access internet connection to get more freedom for wire. WiFi connectivity is use as wide area networking. The range of this type of WiFi is widely 20 meter or more. Now WiFi system is so important for this modern generation that they want to enjoy freely through this WiFi connectivity system.

Security of WiFi: sec urity is most essential part of all connectivity devices today. Because with-out security any person can used those system with-out any warning or inform. So security in the WiFi system is very important for safety and secure from other person. With-out security other person can be used your connection who entire the minimum range of your WiFi. If you want to secure and set a security password for your WiFi device then you should do this by follow your device user manual. When you set a security password then your WiFi connectivity is more secure than a normal Wi-Fi connection.

Internet access: now WiFi enabled device provide to access internet facility. A WiFi enabled device such as PC (Personal computer), tablet PC, Smartphone, WiFi wireless router etc. when you connect one or more WiFi devices with your wireless router, then you can get freedom for a lot of ware and enjoy Internet facility with-out any ware when you within range of a wireless network. It is a secure and faster way to access internet.

PC to PC communications: two Wi Fi enabled computer are connect to each other with-out any access point and you can share file to each other. This method is called ad hoc mode of Wi-Fi transmission. In this mode the maximum data transfer speed is 11 Mbps (802.11b), it is disadvantage of ad hoc method.

Advantage of Wi-Fi:WiFi allows the chipper expansions of LAN (Local area networking). It is called wireless LAN. Laptop manufacturer are gives WiFi facility into most laptops. If you want to connect a PC (Personal Computer) with a wireless network then you required a WiFi adopter to connect a wireless network.

How to download Mediafire file with resume support using free download manager

On August 11th, 2011 by Adhir Ch. Mondal | 3 Comments | Posted in Computer techniques

If you want to download Mediafire file using your internet browser and also you a free Mediafire user then you can do it. Generally Mediafire does not allow resume support download in free user and its maximum data size limit 200MB. And Mediafire does not allow more then 1 file at a time. When you download Mediafire file then normally Mediafire get few moment and required waiting time and generate a download link. By chance a force shutdown required or power off your computer while downloading Mediafire then you do not resume your download because when you change your IP (Internet Protocol address then Mediafire randomly generate a new download link for this download. When you restart your modem, then your IP address automatically changes. If you want to download Mediafire files with-out use any pro or premium Mediafire account then you can do it by follows these following steps.

Step1: first download latest version of fdm (free download manager) software and install it in your computer. When installation is complete then you configure your download manager.

When you run free download manager after installation then you go menu bar and click Option menu and click Download option to open download settings and options or you press Ctrl+O key on your keyboard.

When you click Download options then you see a new window in your screen. In this window you click Monitoring menu on the menu bar and select your current browser.

To save your changes you click Apply and OK button.

Step2: you open Mediafire download link in your browser. If wait required then you wait. Select free user and wait for get a new download link.

When you see this screen of your browser then you right click on the Click here to start download from Mediafire and you click Copy link location.

Step3: in this step you open free download manager and click Plus button or press Ctrl+N button on your keyboard. A new window appears in your screen.

When this box appears in your screen then you paste your download link or URL in the first box. Then you click OK button. If you want to query your file size then you click Query Size Button. When you click OK button then your download automatically starts.

Step4: If your internet connection are lost or re-boot your modem required then you IP automatically changed. When you IP address changed then your download can’t resume.

You see this type of Red signal into your download manager and did not start your download.

Step5: to resume your download you open the previous Mediafire download link into your browser and repeat step2 process to get a new download link.

Step6: copy your new download link and then you open free download manager. Right click on you download and then you click Download properties options.

When you click download options then you see a new window in your screen.

In this screen you delete your previous download link and then you paste your new download link. To save you changes click Apply and Ok button.

Step7: After completing step5 you can start your download. Right click in your download and then you click Start download or press Shift+S button on your keyboard.

How to download Rapidshere file with resume support using free download manager with-out use pro account.

On August 11th, 2011 by Adhir Ch. Mondal | No Comments | Posted in Computer techniques

If you want to download Rapidshere file using your internet browser and also you a free Rapidshere user then you can do it. Generally Rapidshere does not allow resume support download in free user and its maximum data size limit 200MB. And Rapidshere does not allow more then 1 file at a time. When you download Rapidshere file then normally Rapidshere get few moment and required waiting time and generate a download link. By chance a force shutdown required or power off your computer while downloading Rapidshere then you do not resume your download because when you change your IP (Internet Protocol address then Rapidshere randomly generate a new download link for this download. When you restart your modem, then your IP address automatically changes. If you want to download Rapidshere files with-out use any pro or premium Rapidshere account then you can do it by follows these following steps.

Step1: first download latest version of fdm (free download manager) software and install it in your computer. When installation is complete then you configure your download manager.

When you click Download options then you see a new window in your screen. In this window you click Monitoring menu on the menu bar and select your current browser.

To save your changes you click Apply and OK button.

Step2: you open Rapidshere download link in your browser. If wait required then you wait. Select free user and wait for get a download link.

When you click Download button then your download automatically starts. Then pause your current download and copy your download link. If you use Mozilla Firefox browser then you press Ctrl+J button on your keyboard and copy download link.

Step3: in this step you open free download manager and click Plus button or press Ctrl+N button on your keyboard. A new window appears in your screen.

Step4: If your internet connection are lost or re-boot your modem required then you IP automatically changed. When you IP address changed then your download can’t resume.

You see this type of Red signal into your download manager and did not start your download.

Step5: to resume your download you open the previous Rapidshere download link into your browser and repeat step2 process to get a new download link.

Step6: copy your new download link and then you open free download manager. Right click on you download and then you click Download properties options.

When you click download options then you see a new window in your screen.

In this screen you delete your previous download link and then you paste your new download link. To save you changes click Apply and Ok button.

Step7: After completing step5 you can start your download. Right click in your download and then you click Start download or press Shift+S button on your keyboard.

How to run wordpress in a local host [step by step]

On July 26th, 2011 by Adhir Ch. Mondal | No Comments | Posted in Computer techniques

If you want to make a local host in your computer with a sql server, then you need to run apache system. If you want to run wordpress script in our computer without any Internet connection for customize and modified your wordpress and your blog then you carefully read this article. First you download latest version of wordpress from Internet and then you download latest version of xampp software to make a local Sql server on your computer. After downloading Xampp software then you can follows these following steps.

Step1: first you download Xampp software from internet and then you double click on this software to run Xampp setup. Please carefully see this image to install Xampp software in our computer.

When this message appears in your screen then you click Ok Button to go next step.

When this message appears in your screen then you click Next button to go next step.

When this message appears in your screen then you carefully see your destination folder where your xampp system files. Your default destination folder location is C:Xampp. It is highly recommended that you do not change the destination directory of this software. If you are a advance user and have a better knolage about this project then you can change your destination folder by clicking Browse… button. To go next step you click Next> Button.

When you see this message in your screen then you must tick those check boxes. If you do not tick these check box then you sql database does not start. To complete Installation process of Xampp software you click Install button.

When you see this window in your screen then you decide that Xampp software installation is running and it take few minute to complete setup.

It is highly recommended that you do not shutdown or force quit this installation window while installation is not completed. If you close or stop this installation window then your xampp software does not work properly.

After completing your xampp software successfully then you will see this message in your screen.

To finish your setup you click Finish button.

If this message appears in your screen then you click Unblock button. It is a security alert.

When xampp software installation is complete then you will see this massage in your screen.

In this massage you click OK button to finish your Xampp setup.

You carefully see this above message. This message appears right-down site on your screen. This window automatically appears in your computer when you finish xampp software installation or when you run xampp.

Step2: in this step you first open your internet browser and type the following URL into your address bar and then you hit Enter button or click Go button.

http://localhost/ or http://localhost/xampp/splash.php

When you open this URL using your internet browser then you will see this page in your browser.

This page you can allow to select your personal language. It is highly recommended that you can select English Language. When you click English then you see the next screen in your browser.

When this page appears in your internet browser then you click PhpMyAdmin option or you type this following URL in your internet browser.

http://localhost/phpmyadmin/

When you click PhpMyAdmin page, then you will see the following page in your browser.

The main option we are highlighted with red border.

Type a database name and then you click Create button.

Step3: in this step you click the following link or type this link into your internet browser.

http://localhost/security/xamppsecurity.php

When you open the above URL into your browser then you will see this following page into your browser.

In this screen you type any new random password (for example 1234, abcd) and then click Passwort andem button to create root password. Do not forget this password, this password will be required when you configuring your wordpress.

Step4: In this step you extract current version of wordpress into your following directory (xampp directory).

C:xampphtdocs

Extract wordpress.zip file in this directory. And then you follow the next step.

Step5: In this step you click this following link or type this link into your browser address bar and hit Enter button or press Go button.

http://localhost/wordpress/

When you click this above link then you see the following page into your internet browser.

When this screen appears in your browser screen then you click Create a Configuration File button.

When this page appears in your browser then you click “Let’s go!” button.

In this screen you fill-up the following form with appropriate data. Here you enter you’re Mysql password at the password box. And then you click Submit button.

When you click submit button and if you enter current and appropriate data then you will see this image in your browser.

Then you click Run the install button to install wordpress in your computer.

If you do not enter correct data (Username, password etc.) then you will be see this following page in your browser.

When this message appears in your internet browser then you correct your data (Username, password etc.) and then retry your project.

When you’re click Run the install button then you will see this following window in your internet browser.

You fill-up this following form using your browser and then you click Install WordPress button to install WordPress in your computer.

When you wordpress install successfully then you will see this confirmation message in your browser.

When this window appears in your browser then you decide that your wordpress successfully installed in your computer. Now you can login into your wordpress by clicking Log In button.

Or you click this following URL or type address bar of your browser and hit Enter Button.

http://localhost/wordpress/wp-login.php

When this message appears in your browser then you enter you wordpress username and password and then click Log In Button.

Congrats! Your wordpress installation is successfully complete.

http://localhost/wordpress/

Click the above link to visit your new wordpress into your local server.

How to make exclusive funny photo online in 10 minute just required an Internet connection.

On June 16th, 2011 by Adhir Ch. Mondal | No Comments | Posted in Computer techniques

It is so easy to make your photo so funny. Many website has been help to edit your photo so funny.

http://www.loonapix.com

www.funphotobox.com

http://www.loogix.com

http://www.funny.pho.to

www.funnywow.com

In these above websites give you an opportunity to make your photo so funny. Open any website into your browser by clicking above link or copy this link and paste this link into your browser address bar and hit enter. Then you upload your image and chose any effect from sites gallery template for apply this effect into your image. You can adjust your image in this site. When customizing your photo is complete then you can create your photo and download this modified photo into your local disk. Also you can share this photo into your face-book and other websites.

Hare you can create Gif animation image.

This is an original image.

How to hack or reset Ubuntu system password with-out input current password

On June 15th, 2011 by Adhir Ch. Mondal | No Comments | Posted in Uncaggtegorized

If you are use Ubuntu operating system then you can do it. This is very important to know that ‘how to change or hack Ubuntu password’. When you forget your Ubuntu password or you want to hack other computer then you need to know this method. To know this technique please read carefully this process step by step and apply in your computer.

Step1: Re-boot your computer and then you go inside the shell system by follows this way. This image quality is very low. But you understand what we want to say. When this window appears in your screen then you select the second option (Ubuntu, Linux 2.6.32-21-generic (recovery mode)) and hit Enter button.

Step2: When you hit Enter button then you see this next image on your screen . in this window you can select or chose the last option Netrot and hit Enter button.

Step3: When you hit enter button then bottom on this window root shell are appear
root@Ubuntu:~#_

When this root shell appears in your screen then you type this following command and hit Enter button.

Passwd[space][username]

Suppose your username abc then you template command is
passwd abc

After typing this command you can hit enter button.

Then you system required a new password for this username. Type a New password and hit Enter button. Then you re-type your new password and hit Enter button to confirm your verification of your password.

When your password successfully changes then you have a massage from your system.

Step4: When your password successfully changed then you can restart your system using this command.

Reboot type this command and hit Enter button. Then a new password creation for this user is successfully complete. Enjoy your new password.

How to download video from YouTube using mazilla Firefox browser

On June 14th, 2011 by Adhir Ch. Mondal | No Comments | Posted in Computer techniques

This is so easy. If you have Mozilla Firefox browser and you want to download YouTube video then you can follows these following steps and apply it on your browser to download YouTube video from YouTube.

Step1: First you open your Firefox browser then you download a Firefox plug-in (download helper). To install this go to menu bar and click Tools menu, when you click Tools menu then a small sub-menu appear in your screen. Then you click Add-ons option on the new sub-menu. Please follow this following image.

Step2: when you click Add-ons option then you see a small window appear in your screen.

On the Add-ons window you click Get Add-ons icon and type “download helper” and hit Enter Button. There are required a Internet connection and Add-ons window bring-out your search result in a few moment, you can find out Video DownloadHelper plug-in and then you click Add to Firefox… button to install this plug-in into your Firefox.

Step3: when you click Add to Firefox… button then you see an installation window in your screen.

When this window appears in your screen then you click Install Now button. When you click this button then you this plug-in download from internet and then automatically install in your Firefox browser. When your download and installation is successfully complete then you need to restart your browser to active this plug-in (Highly recommending)

Step4: you open http://www.youtube.com and search video, and then you select a video that you want to download. When your record video was play in your browser (required a flash player to play YouTube video) then you see an active following icon on your browser.

Click Hare to download video and select an available format or resolution. Please follow this following image to understand what to do.

Click the above available format to download on your computer.
Enjoy you download video

How to add or remove drive letter using batch file

On June 13th, 2011 by Adhir Ch. Mondal | No Comments | Posted in Computer techniques

If you want to make a batch script for add or remove drive letter then you please follows these following steps to learn about this. This is so risky you complete this operation so carefully.

Step1: first you go your system directory and then you go the following path

C:[back slash]windows[back slash]system32

Create a notepad file in thus folder and type or copy these lines into your notepad.

list volume

select volume 6

assign letter=I

Hare we 6^th volume select and give a drive letter I: for mounting this drive. You copy paste these line or type into your notepad and save it as diskpart1.txt.

To see your target selecting drive name then you follow this method.

First you open command prompt (CMD) then you type Diskpart and then hit Enter button.

On the Diskpart program you can type list volume command and hit Enter button to see your disk status.

Step2: right click on your desktop and then you click New option on the list and click Text Document.

This text file you put a name Diskpart.bat . Open this batch file via notepad and type this following line or command or just copy and paste the word into your notepad.

@echo off

diskpart /s C:[back slash]windows[back slash]system32[back slash]diskpart1.txt

exit

Type these three lines into your notepad and save it before run batch file.

When you complete this above step and run your batch script then you can success to add drive letter using batch file.

Step3: this step for removing your drive letter using batch script. First you go your system directory and then you go the following path

C:[back slash]windows[back slash]system32

Create a notepad file in thus folder and type or copy these lines into your notepad.

list volume

select volume 6

remove letter=I

Hare we 6^th volume select and its drive letter I: , we want to remove this drive letter using batch file. You copy paste these line or type into your notepad and save it as diskpart2.txt.

Step4: right click on your desktop and then you click New option on the list and click Text Document.

This text file you put a name Diskpart1.bat . Open this batch file via notepad and type this following line or command or just copy and paste the word into your notepad.

@echo off

diskpart /s C:[back slash]windows[back slash]system32[back slash]diskpart2.txt

Type these three lines into your notepad and save it before run batch file.

When you complete this above step and run your batch script then you can success to remove drive letter using batch file.

How to check Nokia s40 device working condition.

On June 11th, 2011 by Adhir Ch. Mondal | 2 Comments | Posted in Mobile techniques

If you are currently use Nokia s40 device then you are check your phone working capability. To test your phone please flow this flowing steps.
Method1:First switch on your phone. When properly turn on your phone then you go to Menu of your phone and then you go setting option on your phone and then you go shortcut option. In the shortcut function you click navigation function and chose a key function (value) and click on it and on the selection list you go the application list option. When you go and click application list option then your phone hangup for few moment. If your phone appear a list of application then you think your phone have good condition. But, if your phone hang up permanently then you can turn off your phone and update your phone operating system.

How to edit Boot time-out setting on windows 7 using command prompt.

On June 10th, 2011 by Adhir Ch. Mondal | No Comments | Posted in Computer techniques

If you use more than one operating system then after the boot screen you need to wait 30 sec for wait (default). This boot screen gives you a time to select your target boot. This is a gateway to go one of this operating system. If you want to adjust this time out setting then you please follow these following steps and carefully apply in your computer.

Step1: first you can open command prompt as the following way.

Start>All Programs>accessories>Command Prompt

Command prompt is same as dos but some different. This is a black screen window. You can type command on this window and hit Enter button.

Step2: in the black screen window you can type the following command to configure boot time out setting on windows 7.

bcdedit /timeout 01

Hare 01 means 1 second waits to select your target boot if you do not select in this time then your default operating system will be start automatically. If you need to change this time then you replace your time on the above command. Suppose you want to set 13 second then your command is

bcdedit /timeout 13

When you type this command into your command prompt window and hit Enter button then you see this following massage on your command prompt screen.

The operation complete successfully.

When you see this massage then you confirm your boot configuration is successfully complete. But, If this massage will not display in your command prompt window then you can follow the bellow way.

2^nd method: you type these command step by step in your command prompt and hit Enter button.

cd windows

cd system 32