Firefox's latest - and greatest - version!

Firefox's latest - and greatest - version!

Mozilla Firefox is one of the World's most popular web browsers and was one of the first to break the stranglehold of Microsoft's Internet Explorer (IE) on the web browsing market. 

Features

This is the latest version of the popular web browser and as always, Mozilla claim to a speedier, safer browsing experience. Tests reveal that this newest version of Mozilla Firefox is certainly quick to load even the most graphics intense pages.

Firefox also now features secure connections when performing Google searches to improve privacy and there's an updated site identity indicator in the URL bar. There's only one relevant improvement in the latest version of Firefox for most users relating to security. Security has been improved with mixed content blocking which protects users from "man-in-the-middle attacks" and from eavesdroppers on HTTPS pages. There are also several bug fixes.

Mozilla Firefox's tab layout is quite similar to Google's Chrome browser, instead of seeing a blank page whenever a new tab is opened Firefox users will now be treated to icons that offer quick access to everything from bookmarks to most recently accessed and most frequently visited sites.


These icons are fully customizable in Mozilla Firefox as well. You can click and drag them to any spot you like on your name tab's page. If you're not a fan, you can also go to the grid icon on the upper right side of your browser and erase them entirely.

Firefox features Facebook integration. Firefox supports Facebook's social API so you can have dedicated buttons for Facebook in your browser. Mozilla Firefox supports Facebook's Messenger within Firefox, giving users desktop notifications as well as a persistent friends list and activity feed on the right. Conversations will open up as overlays on top of whatever website you're on so you can multitask while you chat.

Spell Checking

A built-in spell checker works directly in Web pages, like blog posts and email. Save yourself a step and stop worrying about typos.

Download Manager

Download files seamlessly and securely! A pause and resume feature means you can stop and start anytime. So, if you’re halfway through downloading a big file and it’s time to catch the bus, just pause and pick up where you left off later. The resume function also works if your system crashes or is forced to restart. The manager shows your download progress and even lets you search your files by name or the Web address where the download came from.

Offline Browsing

Take your computer offline and still have your information at your fingertips. Certain sites may allow applications—like your Web-based email—to stay with you at all times.

Full Zoom

Want to see captions and pictures in a larger size? An elegant new zoom feature lets you swoop in and see the details on web pages, zeroing in on what matters. The pages will scale equally, with all the elements of layout changing at the same level.

Advanced Security

Dress Up Your Firefox with Themes

Change the look of your Firefox to practically anything with Themes: thousands of easy-to-install themes created by users from around the world (or that you make yourself!). With a single click, you can dress your browser up in simple designs, colorful patterns, and content from partners like Harry Potter and Bob Marley.

Anti-Malware

Firefox protects you from viruses, worms, trojan horses, and spyware delivered over the Web. If you accidentally access an attack site, it will warn you away from the site and tell you why it isn’t safe to use.

Instant Web Site ID

Want to be extra sure about a site’s legitimacy before you make a purchase? Click on its favicon for an instant identity overview. Another click digs deeper: how many times have you visited? Are your passwords saved? Check up on suspicious sites, avoid Web forgeries and make sure a site is what it claims to be.

Usability

Mozilla Firefox really changed the way people browse the web when it originally burst onto the scene. Today Firefox remains an incredibly powerful and customizable browser, although competition from Google Chrome has given it a definite run for its money.

Conclusion

In terms of interface, the latest version of Firefox isn't much different from previous versions, but the features it has added certainly make for a nicer, more enjoyable browsing experience overall.

Pros

• Very secure

• Quick to load

• Lots of extensions to choose from

• Fast, generally stable browser

• Silent updates for Windows users

Cons

• Memory leak persists for some

• May not initially work with some add-ons

Recent changes

• http://www.mozilla.org/en-US/firefox/24.0/releasenotes/

Download

            Direct download

     

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avast! security

avast! revolutionizes home security

avast! Free Antivirus is an antivirus that needs no introduction. Praised by many users for protecting their PCs, avast! software offers comprehensive security in a way that's efficient and easy to handle, all backed up by a brand that you can trust.

Everything you need for safeguarding your PC

avast! Free Antivirus provides real-time protection for your computer. It constantly updates its database of virus definitions to ensure you get maximum protection against viruses and spyware. Five different types of scans are available. You’ll get a rapid, meticulous scan which will target removable media and files that you choose, as well as launching a scan when you boot up your computer. The software is also able to scan rootkits at system startup.

avast! Free Antivirus also offers a selection of tools to help you perform various tasks: there's a tool for updating the software on your computer; a tool for cleaning your browser (mainly of toolbars and unwanted extensions); a tool that lets you use it via remote control (to control your PC or your mobile devices remotely and troubleshoot a friend’s computer); and or a tool for creating rescue disks.

A new interface and improved performance

For the 2014 version, avast! Free Antivirus completely revised its installation process (the size of the installation file has also been halved). This ensures quicker, easier and more secure operation.
avast! Free Antivirus has undergone a complete redesign of its interface, resulting in the most important changes since version 5.0: it’s now much clearer and allows easy access to various features and settings from a sidebar. The home page is now customizable and lets you add up to four shortcuts to quickly access the tools you use most often (scan, clean your browser, etc.).

With avast! Free Antivirus 2014, an optimized scan engine means scans are faster. Scanning EXE files is twice as fast, while scans of text content (web pages and scripts) is up to 10 times faster.

The memory usage of avast! Free Antivirus 2014 has been optimized. The software will only load modules in use, thereby reducing the amount of memory used by avast! and leaving more free memory for other, unrelated tasks.

A first rate free antivirus

With a great new interface, enhanced protection and advanced settings, avast! Free Antivirus should be your first choice if you're looking for a free and reliable antivirus.

avast! Free Antivirus 2014's new features

• New interface 
• Improvements to the installation process 
• Performance enhancements (reduction of installation packages, quicker scanning of files, optimized memory usage) 
• New plugins for browsers 
• DeepScreen: technology that allows avast! to make better decisions in real time when an unknown file is executed 
• Hard mode: intended for inexperienced users to lock down their computer more securely 
• Continuous system update improvements 
• Improved malware cleaning 
• Uses enhanced memory

Pros

• 5 protection shields
• New installer and interface
• Remote help feature
• Windows8 compatible
• Second line installation option
• Much better resource consumption

Cons

• Nothing so far

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Wi-Fi

Wi-Fi

Wi-Fi (also spelled Wifi or WiFi) is a popular technology that allows an electronic device to exchange data wirelessly (using radio waves) over a computer network, including high-speed Internet connections. The Wi-Fi Alliance defines Wi-Fi as any "wireless local area network (WLAN) products that are based on the Institute of Electrical and Electronics Engineers' (IEEE) 802.11 standards". However, since most modern WLANs are based on these standards, the term "Wi-Fi" is used in general English as a synonym for "WLAN". Only Wi-Fi products that complete Wi-Fi Alliance interoperability certification testing successfully may use the "Wi-Fi CERTIFIED" trademark.

  A device that can use Wi-Fi (such as a personal computer, video-game console, smartphone, digital camera, tablet or digital audio player) can connect to a network resource such as the Internet via a wireless network access point. Such an access point (or hotspot) has a range of about 20 meters (65 feet) indoors and a greater range outdoors. Hotspot coverage can comprise an area as small as a single room with walls that block radio waves or as large as many square miles — this is achieved by using multiple overlapping access points.

 Wi-Fi can be less secure than wired connections (such as Ethernet) because an intruder does not need a physical connection. Web pages that use SSL are secure but unencrypted internet access can easily be detected by intruders. Because of this, Wi-Fi has adopted various encryption technologies. The early encryption WEP, proved easy to break. Higher quality protocols (WPA, WPA2) were added later. An optional feature added in 2007, called Wi-Fi Protected Setup (WPS), had a serious flaw that allowed an attacker to recover the router's password. The Wi-Fi Alliance has since updated its test plan and certification program to ensure all newly certified devices resist attacks.

Internet access

A Wi-Fi-enabled device can connect to the Internet when within range of a wireless network which is configured to permit this. The coverage of one or more (interconnected) access points — called hotspots — can extend from an area as small as a few rooms to as large as many square miles. Coverage in the larger area may require a group of access points with overlapping coverage. Outdoor public Wi-Fi technology has been used successfully in wireless mesh networks in London, UK.

Wi-Fi provides service in private homes, high street chains and independent businesses, as well as in public spaces at Wi-Fi hotspots set up either free-of-charge or commercially. Organizations and businesses, such as airports, hotels, and restaurants, often provide free-use hotspots to attract customers. Enthusiasts or authorities who wish to provide services or even to promote business in selected areas sometimes provide free Wi-Fi access.

Routers that incorporate a digital subscriber line modem or a cable modem and a Wi-Fi access point, often set up in homes and other buildings, provide Internet access and internetworking to all devices connected to them, wirelessly or via cable.

Similarly, there are battery-powered routers that include a cellular mobile Internet radiomodem and Wi-Fi access point. When subscribed to a cellular phone carrier, they allow nearby Wi-Fi stations to access the Internet over 2G, 3G, or 4G networks. Many smartphones have a built-in capability of this sort, including those based on Android, Bada, iOS (iPhone), Windows Phone and Symbian, though carriers often disable the feature, or charge a separate fee to enable it, especially for customers with unlimited data plans. "Internet packs" provide standalone facilities of this type as well, without use of a smartphone; examples include the MiFi- and WiBro-branded devices. Some laptops that have a cellular modem card can also act as mobile Internet Wi-Fi access points.

Wi-Fi also connects places that normally don't have network access, such as kitchens and garden sheds.

Advantages

Wi-Fi allows cheaper deployment of local area networks (LANs). Also spaces where cables cannot be run, such as outdoor areas and historical buildings, can host wireless LANs.

Manufacturers are building wireless network adapters into most laptops. The price of chipsets for Wi-Fi continues to drop, making it an economical networking option included in even more devices.

Different competitive brands of access points and client network-interfaces can inter-operate at a basic level of service. Products designated as "Wi-Fi Certified" by the Wi-Fi Alliance are backwards compatible. Unlike mobile phones, any standard Wi-Fi device will work anywhere in the world.

Wi-Fi Protected Access encryption (WPA2) is considered secure, provided a strong passphrase is used. New protocols for quality-of-service (WMM) make Wi-Fi more suitable for latency-sensitive applications (such as voice and video). Power saving mechanisms (WMM Power Save) extend battery life.

Limitations

Spectrum assignments and operational limitations are not consistent worldwide: most of Europe allows for an additional two channels beyond those permitted in the US for the 2.4 GHz band (1–13 vs. 1–11), while Japan has one more on top of that (1–14). As of 2007, Europe is essentially homogeneous in this respect.

A Wi-Fi signal occupies five channels in the 2.4 GHz band. Any two channel numbers that differ by five or more, such as 2 and 7, do not overlap. The oft-repeated adage that channels 1, 6, and 11 are the only non-overlapping channels is, therefore, not accurate. Channels 1, 6, and 11 are the only group of three non-overlapping channels in the U.S. In Europe and Japan using Channels 1, 5, 9, and 13 for 802.11g and 802.11n is recommended.

Equivalent iso-tropically radiated power (EIRP) in the EU is limited to 20 dBm (100 mW).

The current 'fastest' norm, 802.11n, uses double the radio spectrum/bandwidth (40 MHz) compared to 802.11a or 802.11g (20 MHz). This means there can be only one 802.11n network on the 2.4 GHz band at a given location, without interference to/from other WLAN traffic. 802.11n can also be set to use 20 MHz bandwidth only to prevent interference in dense community.

Safety

The World Health Organization (WHO) says "there is no risk from low level, long-term exposure to wi-fi networks" and the United Kingdom's Health Protection Agency reports that exposure to Wi-Fi for a year results in the "same amount of radiation from a 20-minute mobile phone call."

A small percentage of Wi-Fi users have reported adverse health issues after repeat exposure and use of Wi-Fi,  though there has been no publication of any effects being observable in double-blind studies. A review of studies involving 725 people that claimed electromagnetic hypersensitivity found no evidence for their claims.

One study claims, in preliminary results, that "laptops (Wi-Fi mode) on the lap near the testicles may result in decreased male fertility". Another small sample study (15 males and 15 females) found a decrease in the P300 event-related potential (ERP) for male but not female subjects while engaging in a working memory oriented linguistic task during Wi-Fi exposure.

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LASER security system

dhanushgowda.blogspot.com

Make circuit like this..............

 

place a LASER torch and the circuit as shown in the picture. make to fall LASER on the LDR by adjusting the mirror................

 

If u have any question about this, you can email me:- dhanu.gowda25@gmail.com

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