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> Latest blog entries
in BrainBump Blog at 08-1-08 12:17
in nilavan's Blog at 07-28-08 07:15
in Abhas at 07-5-08 06:08
in Jeyakar at 07-4-08 12:27
in Jeyakar at 07-1-08 04:33

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August 2008

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> Latest Discussions
trace @ 08-18-08 14:29
Read: 15   Comments: 0

> Recommended Sites
 
> Dead link Reporting
Posted by jeyakar - 11-14-06 11:45 - 2 comments
Dear all,

First of all I thank all the active forum members (present/future) for sharing valuable resources and making this forum running successfully then and there. The purpose why I opened this new topic is to say something about the dead link notification option in each topic.
  1. Everyone can report "dead link" in this forum by using the "Report" option available in the posted topic. Forum Admin and moderators give a warm welcome for those helpful things.
  2. Forum admin and moderators will always check the dead links before closing the topic and so don't want to betray anyone.
  3. Forum Admin and Moderators will do their job as best as they can by cleaning all the dead links from the forum then and there.
  4. Some links may not be accessible from your place, whereas it will be well and good for others. So, please mention the proper reasons when you are reporting a dead link. Without proper reasons no topic will be moved to Trash Collector.
Don't disturb forum admin and moderators by reporting dead link for an active topic. Instead of that kindly avoid using that option than using it and troubling others.
Read 864 times - last comment by AndrewAvelin   

> HELP Anuksha!! - List of Contributors
Posted by Jeeva - 03-21-06 07:06 - 45 comments
HELP ANUKSHA

We have started collecting funds from O4G friends to help anuksha. Remember friends, Your small contribution is going to help one of Smart Kid's Future. Visit here for All the details.

http://www.helpanuksha.cjb.net


FOR THOSE WHO ARE IN INDIA WUD LIKE TO CONTRIBUTE THROUGH Only4gurus.Org, PLEASE TRASNFER YOUR CONTRIBUTION TO THIS ACCOUNT
Name: T. Sasikumar
Account No : 005601019551
Bank - ICICI Bank - (Pondycherry Branch) , India
Please Inform to Us thorugh email or PM after you u transfer the moeny. My Id is vavjeeva@gmail.com


TOTAL AMOUNT NEEDED FOR OPERATION :
8,00,000 Rs

AMOUNT ESTIMATED FROM O4G : 1,00,000 Rs
AMOUNT RECEIVED TILL NOW : 1,00,000 Rs


List Of Contributors From Only4Gurus

FROM UAE
  • DOLPHIN123 - O4G Founder - 12,000 Rs
  • SHUMRA SONY (UAE) - 7500 Rs
  • Ashraf Ali (UAE) - 6000 Rs
  • Jeeva - O4G Founder (UAE) - 5000 Rs
  • Nilavan - O4G Admin (UAE) - 5000Rs
  • Simon (UAE) - 5000 Rs
  • Deepak (UAE) - 2500 Rs
  • Krishna(UAE) - 2000 Rs
  • Mohammad Hanif - 1150 Rs
  • K.G SenthilKumar - 1150 Rs
  • Senthil(CADD Emirates,UAE) - 1100 Rs
  • Jakankir Peer Mohammad(UAE) - 1100 Rs
  • Sampath (UAE) - 1100 Rs
  • Anandan Ganesan(UAE) - 1000 Rs
  • Musthak Ahmed (UAE) - 1000 Rs
  • Jeffy George (UAE) - 750 Rs
  • Sham - 600 Rs
  • Nasir - 600 Rs
  • Mujeeb - 600 Rs
  • Faizal - 600 Rs
  • Riyaz - 600 Rs
  • Arun (CADD Emirates,UAE) - 600 Rs
  • Bashyam(CADD Emirates,UAE) - 600 Rs
  • Murali (UAE) - 600 Rs
  • S Thavara - 600 Rs
  • Mohammad Haroon - 575 Rs
  • Syed Zia - 575 Rs
  • Maqsood - 575 Rs
  • Mohammed Iqbal - 350 Rs
  • Arshad Hashmi - 350 Rs
  • Kumar (UAE) - 300 Rs
  • Mohammed Rizwan - 175 Rs


List of People those who transferred to ICICI Account
  • Mohammed Aslam Khan - 10,000 Rs
  • RajaKumaran (TamilMantram.com) - 10,000 Rs
  • TouchWood Decor Ltd - 8,700 Rs List of Contributors from Touchwood
  • Sasi (INDIA) - 1000 Rs
  • Yogesh (Turtle) - 1000 Rs
  • Andrew G Avelin - 1000 Rs
  • UtopianHere - 750 Rs
  • Jeyakar - 750 Rs
  • Kumaresh - 500 Rs
  • Hayath Basha - 500 Rs
  • Margam Srinivas - 500 Rs
  • Vishal Kumar - 500 Rs
  • Anshuman Sinha - 500 Rs
  • Vara prakash - 500 Rs
  • Nanda - 500 Rs
  • Sivakumar - 500 Rs
  • Unnamed Guru - 400 Rs
  • Parikh Gujarat (BIRLA COPPER)- 300 Rs
  • Mohann ( K.MOHAN - Sify Limited) - 300 Rs
  • SivaKoteswara Rao - 300 Rs
  • Praba (Turtle) - 250 Rs
  • Rajesh Prabhu - 100 Rs
Read 8,135 times - last comment by jeyakar   

> [Debate] How to Organize this contest!!!
Posted by Jeeva - 09-21-05 13:40 - 13 comments
Dear Frenz,

i am getting lot of requests from some of active members to put "
Programmer of the Month" competition like Creator of the month. i think it is a very good idea.. we can utilize our free time in a meaning way instead of sending forwarding mails 6.JPG 6.JPG 6.JPG

but, i have no idea at all about how to start this contest?

so, the guys who interested in this contest can put up suggestions here.. at the end, we will come up with one decision..

8.jpg 8.jpg Throw ur ideas here buddy... smile.gif 8.jpg 8.jpg
Read 2,185 times - last comment by neo   

> ABOUT ONLY4GURUS
Posted by y_udaykiran - 09-14-05 04:15 - 0 comments
Only4Gurus was basically started as a small forum unit in June 2004 where a few friends could communicate and share their knowledge among them.
You may think why a forum for just sharing thoughts.Thtz what many people wonder, what these group of friends actually thought was why should the knowledge that we have gained be limited to us let us share it.

Thtz how came the caption

"Sharing thoughts.But only4gurus."

You may again have a question regarding the caption "But only4gurus"

This caption was added bcoz whoever joins our forum we see to it that he gets knowlwdge as well as free enjoyable time with this forum and emerges out as a GURU.

We now have around 16500 members and growing more minute by minute.

We believe that knowledge is best nurtured when it is shared.So keep sharing and enjoy your time in the forum.


Our Forum is divided into sections:


Signing Off
Uday
"One of those pesky members 6.JPG .whoz a Mod cool.gif now"
Read 2,893 times - make a comment   

> Read Me First!!!!
Posted by Jeeva - 08-18-05 04:31 - 0 comments
Hello Guru,
Welcome To Only4gurus (Where Gurus Meet!).. Our Motto is Keep Learning & Sharing Knowledge to Others.. i reckon that Our O4G is not a warez forum. not an Ebook Forum.. It is all about discussing & sharing latest technical knowledge. We always appreciate the one who is answering for other doubts as well sharing useful tutorials and tips.

To Visit All Other Sections (Except Active Members Area) you should atleast post one post in
introduction section.

How To Become Active Member : Its Simple.. You must start posting useful tutorials and tips in your expertise area. Also, if you have any doubts, you can post it in the relevant area to get the answers. You can also answer for others doubts. These are all the tips that will make u to become active member in a very short period of time. Remember,We do not encourage posting Ebooks links in Discussion Area. Quality of Posts only can make u Active Member, Not a Quantity. After you become an Active Member, you will be able to see EBOOKS & Tutorials & CBT Video Tutorials for all the sections as well O4G Gmail Rare Book Collections areas.

All the very best.. O4G Rocks..

To Know more about Only4gurus, Visit this link
http://forum.only4gurus.org/index.php?showtopic=5931

Some Rules that you must follow
excl.gif Always USE [ CODE ] TAG BEFORE POSTING ANY LINKS..
[ CODE ] URL [ /CODE ] . Click the below link to know more about how to use CODE TAG.
http://forum.only4gurus.org/index.php?showtopic=17147

excl.gif DO SEARCH BEFORE POST ANYTHING.. DUPLICATE POST WILL BE DELETED IMMEDIATLY WITHOUT NOTIFICATION AND YOU WILL BE WARNED.

excl.gif Do not post Ebook Links in Discussion Areas. You will allowed to post ebooks only after you become an active member.

excl.gif Do Not Provide Any Personal Information in forum.

excl.gif Do not promote any other site by providing the links in the signature.

Have a Nice Stay Guru. O4G Rocks with all you gurus!!!

From
O4G Admin Team.
Read 4,370 times - make a comment   

> For First Time Visitors - Must Read
Posted by Jeeva - 07-20-05 15:54 - 26 comments
Hello {username},
Welcome To Only4gurus (Where Gurus Meet!).. Our Motto is Keep Learning & Sharing Knowledge to Others.. i reckon that Our O4G is not a warez forum. not an Ebook Forum.. It is all about discussing & sharing latest technical knowledge. We always appreciate the one who is answering for other doubts as well sharing useful tutorials and tips.

To Visit All Other Sections (Except Active Members Area) you should atleast post one post in
introduction section.

How To Become Active Member : Its Simple.. You must start posting useful tutorials and tips in your expertise area. Also, if you have any doubts, you can post it in the relevant area to get the answers. You can also answer for others doubts. These are all the tips that will make u to become active member in a very short period of time. Remember,We do not encourage posting Ebooks links in Discussion Area. Quality of Posts only can make u Active Member, Not a Quantity. After you become an Active Member, you will be able to see EBOOKS & Tutorials & CBT Video Tutorials for all the sections as well O4G Gmail Rare Book Collections areas.

All the very best.. O4G Rocks..

To Know more about Only4gurus, Visit this link
http://forum.only4gurus.org/index.php?showtopic=5931

Some Rules that you must follow
excl.gif Always USE [ CODE ] TAG BEFORE POSTING ANY LINKS..
[ CODE ] URL [ /CODE ] . Click the below link to know more about how to use CODE TAG.
http://forum.only4gurus.org/index.php?showtopic=17147

excl.gif DO SEARCH BEFORE POST ANYTHING.. DUPLICATE POST WILL BE DELETED IMMEDIATLY WITHOUT NOTIFICATION AND YOU WILL BE WARNED.

excl.gif Do not post Ebook Links in Discussion Areas. You will allowed to post ebooks only after you become an active member.

excl.gif Do Not Provide Any Personal Information in forum.

excl.gif Do not promote any other site by providing the links in the signature.

Have a Nice Stay Guru. O4G Rocks with all you gurus!!!

From
O4G Admin Team.
Read 2,429 times - last comment by ketu   

> wanna become Active Member..
Posted by Jeeva - 06-28-05 12:13 - 301 comments
How To Become Active Member
  • Number of posts will not make u active member.
  • We consider only Quality of posts
  • Sharing Ebooks only will not make u Active Member. U need to participate in general section also.
  • By seeing ur participation in our forum, our moderator will consider u as Active Member. So, keep sharing.
if u feel that u r doing fair participation in the forum and u still not yet become Active member.. than u r in the right place.. put ur request here.. we will consider it and let u know in the PM.. smile.gif

For Current Active Members :
if you are not posting anything for long time.., u will lose your status.. So, keep pasting and posting..

Read 21,129 times - last comment by supandi   

> Terms & Conditions of Membership
Posted by Jeeva - 06-8-04 17:52 - 0 comments
1) This Forum is privately owned and run. It is offered to you conditioned on your acceptance of the RULES & CONDITIONS contained herein.

2) Your use of this Forum constitutes your agreement to all such rules and conditions.

3) To view other forums you need to login or register. If you are new and have not registered yet, then make sure you read the rules before looking at the board. All members must agree to the rules.

4) You must be a regular visitor to the site, not just visiting & getting links & stuff, you MUST share & contribute. Try to HELP AS MUCH AS YOU CAN.

5) These RULES & CONDITIONS may be subject to CHANGE without notice and it is the responsibility of the member to apprise themselves of all updates. Anything not expressly covered in these rules is subject to an Administrator’s approval. An Administrator’s word is final


excl.gif U MUST GIVE INTRO ABOUT U BEFORE GOING INTO OTHER SECTIONS.. U WILL NOT BE ALLOWED TO VISIT OTHER SECTION UNLESS U POSTED 1 POST IN INTRODUCTION SECTION..

excl.gif THERE ARE PLENTY OF RESOURCES AVAILABLE IN ACTIVE MEMBER SECTION. U MUST SHARE & PARTICIPATE IN GENERAL DISCUSSION TO BECOME ACTIVE MEMBER.

excl.gif USE [ CODE ] TAG BEFORE POSTING ANY LINKS..
[ CODE ] URL [ /CODE ]

excl.gif LIVE LINKS ARE NOT ADVISED TO POST HERE..

excl.gif hxxp instead of http and use wxw instead of www

excl.gif DO SEARCH BEFORE POST ANYTHING.. DUPLICATE POST WILL BE DELETED IMMEDIATLY WITHOUT NOTIFICATION..

excl.gif DO NOT CONCENTRATE MORE ON APPLICATION POST UNLESS IT IS VERY USEFUL.. THIS FORUM IS MAINLY TO SHARE THE TECHNICAL KNOWLEDGE. (EBooks & IT Discussions)

excl.gif DO NOT PROVIDE ANY PERSONAL INFORMATION IN FORUM.

excl.gif DO NOT PROMOTE ANY OTHER SITE BY PROVIDING THE LINKS IN THE SIGNATURE.

excl.gif NOMORE NATIVE TALK IN FORUM EXCEPT TAMIL SECTION.

excl.gif FROM TODAY, WE CAN POST WAREZ LINKS ALSO (SOFTWARE LINKS, SERIALS, EBOOKS).. AS LONG AS , WE ARE NOT HOSTING ANYTHING, V DONT FACE ANY PROBLEM OF VIOLATING THE RULES.. BUT, WE MUST USE [CODE] TAG BEFORE POSTING ANY WAREZ LINKS. DIRECT LINKS ARE NOT ALLOWED.

excl.gif ALL POSTS RELATING TO GENERAL DISCUSSIONS AND EBOOK LINKS MUST HAVE DETAILS REGARDING THE POST

excl.gif PARTICULARLY POSTS HAVING LINKS FOR EBOOKS MUST ALSO INCLUDE THE BOOK DETAILS AND LINKS TO MATERIALS MUST INCLUDE A BRIEF DETAIL ABOUT THE ARTICLE


excl.gif POSTS WITHOUT THESE DETAILS WILL BE IMMEDIATELY DELETED WITHOUT FURTHER NOTICE OR PM




Moderators Policies.
1) The Moderators control, clean & maintain the forum.

2) They will edit OR delete threads/posts as they see fit and in accordance with the forum RULES.

3) Do not ask to be a Moderator. Asking to be a Moderator is pretty much a GUARANTEE that you never will become one.

4) Flaming of a Administrators/Moderators is grounds for an immediate BAN.

5) Anything political in anyway will be closed or deleted unless determined to be pertinent by Admins/Mods.


Post in the Correct Board.

1) Before starting a NEW Thread/Post, always take a couple of seconds to think which board to use.

2) Don’t spam & bump by posting the same message to multiple boards.

3) If you just posted a new thread and it disappeared, it's very likely that the Administrators/Moderators moved it to another board.

4) Posts/Threads in the WRONG board will be moved, edited or deleted by Administrators/Moderators.

5) Use descriptive subject of threads. There are seperate posting rules in some forums which have to be followed.

6) Do NOT Post Working links like replace all HTTP'S & FTP'S with H**P'S & F*P'S Respectively.

7) No XXX links allowed.

General Rules

Due to the realtime nature of this board, it is impossible for all posts to be monitored and neither the Administrators nor the Moderators will be held accountable for any offensive or illegal post made by the board's members.


Please do a SEARCH before posting in any threads/posts, as the program you are posting may already be LISTED ... then just add your link to that Thread. Don't create multiple threads on same topic and don't post same url's again and again to increase your post count.


Flooding the board with posts is not allowed (Flooding is posting a large number of posts quickly). You should NEVER have two posts consecutively (one after the other), as you can edit your post to change any mistakes or add any comments. If you do so, it will be considered as SPAM and for SPAMMING, we have the right to give warnings and suspend/delete the account’s


SPAM is not allowed on the board in ANY case. If SPAM is added on the board, then the post will either be deleted or moved to the Recycle Bin. Spam can be considered as: posting a large number of "Thank you" posts to gain status on the board. Spamming is characterized by the initiation of threads or posts that contribute nothing to a forum, be it off topic or on topic. Examples include: empty posts, posts with few words that have no relation to the current thread or discussion and those posts that state they are spam, either to annoy or increase a member's post count. This determination is made by the forum Administrator's and is not up for discussion.


This board is a collection of sections, which are dedicated to specific criteria and should NOT be considered a place to incite argument or debate which are based on moral, political, philosophical, ethical, or cultural issues. IT IS NOT FREE SPEECH. It is privately owned


ANY post, which breaks ANY of the rules maybe deleted or moved to the Trash Can.


Post your Upload/Request under the same thread. We will have an organized forum when you post your upload/request under an already-posted thread of same Topic, even if the links are dead, you can send your request there. There will be always an answer.


If you've made a request but later found the answer yourself, please post. Please write where you found it, because other people may also be looking for it.


You MUST add your email id in your profile. You will recieve important updates if any. You can choose to hide your email id from other members.


If you have any question please contact Administartor's / Moderator’s.
Read 3,244 times - make a comment   

> The 3rd Feature Pack For Vista Is Arriving...
Posted by trace - 08-18-08 14:29 - 0 comments
Hi,

The 3rd Feature Pack For Vista Is Arriving...

Microsoft will release a new Windows Feature Pack for Storage which contains 3 technologies:

* Active Storage Platform: enables the Windows platform to restrict access to portable devices (such as a USB Flash Device) via a certificate or password authentication based on the IEEE 1667 standard specification.
* Image Mastering API update for Blu-Ray media: enables the Windows platform to do master style optical burning on Blu-Ray media.
* Smart Card Driver: provides support for new form factors, such as ICCD/CCID.


Windows Feature Pack for Storage will be available for the following operating systems: Windows Vista, Windows Vista SP1, Windows Server 2008, Windows XP SP2+, Windows Server 2003 SP1+. Smartcard on XP is only available in 32 bit.

The Windows Feature pack for Storage won’t be the first Vista feature pack. Microsoft has released, in addition to the previously mentioned optical feature pack, the Windows Vista Feature Pack for Wireless and the Windows Media Center TV Pack.

Feature packs are a way for Microsoft to get new features to users without making them wait for the next major Windows release. Unlike Service Packs, which typically are more about bug fixes than new features, feature packs are, as the name suggests, the delivery vehicle for new, between-release, features.

More Info Visit

CODE
http://blogs.zdnet.com/microsoft/?p=1530


Courtesy: Neowin
Read 15 times - make a comment   

> SQL Server 2008 Exam Beta: 71-450: PRO: Microsoft SQL Server 2008, Designing, Optimizing, and Maintaining a Database Administrative Solution
Posted by kalikoi - 08-15-08 10:27 - 0 comments
You are invited to take beta exam 71-450: PRO: Microsoft SQL Server 2008, Designing, Optimizing, and Maintaining a Database Administrative Solution. If you pass the beta exam, the exam credit will be added to your transcript and you will not need to take the exam in its released form. The results will not appear on your transcript until several weeks after the final form of the exam is released. The 71-xxx identifier is used for registering for beta versions of MCP exams, when the exam is released in its final form the 70-xxx identifier is used for registration.



71-450: PRO: Microsoft SQL Server 2008, Designing, Optimizing, and Maintaining a Database Administrative Solution counts as credit towards the following certification(s).

· Microsoft Certified IT Professional: Database Administrator 2008. In order to earn this certification you must also pass exam 70-432: TS: Microsoft SQL Server 2008, Implementation and Maintenance.



Find exam preparation information here: http://www.microsoft.com/learning/exams/70-450.mspx


--------------------------------------------------------------------------------

Availability

Registration begins: August 15, 2008

Beta exam period runs: August 18, 2008– September 16, 2008



Receiving this invitation does not guarantee you a seat in the beta; we recommend that you register immediately. Beta exams have limited availability and are operated under a first-come-first-served basis. Once all beta slots are filled, no additional seats will be offered.



Testing is held at Prometric testing centers worldwide, although this exam may not be available in all countries (see Regional Restrictions). All testing centers will have the capability to offer this exam in its live version.



Regional Restrictions: India, Pakistan, China


--------------------------------------------------------------------------------

Registration Information

Please use the following promotional code when registering for the exam: 239F4
You must register at least 24 hours prior to taking the exam.



To register in North America, please call:

· Prometric: (800) 755-EXAM (800-755-3926)



Outside the U.S./Canada, please contact:

· Prometric: http://www.register.prometric.com/ClientInformation.asp


--------------------------------------------------------------------------------

Test Information and Support

You are invited to take this beta exam at no charge.
You will be given four hours to complete the beta exam. Please plan accordingly.

Read 38 times - make a comment   

> Register for Your Second Shot Now!
Posted by trace - 08-13-08 12:21 - 1 comments
Hi,

Register for Your Second Shot Now!

In the real world, you may need more than one chance at certification. This means that if you sign up for the Second Shot offer and you do not pass a certification exam on your first try, you have a free, second chance to pass it. Microsoft Certifications recognize and validate your real-world IT skills, support you with access to unique resources that help you stay up to speed on the latest Microsoft technologies, and help you succeed in your IT career by developing skills that are relevant to your chosen field. This offer is available for a limited time, so be sure to register now.

More Info Visit

CODE
http://www.microsoft.com/learning/mcp/offers/secondshot/default.mspx
Read 41 times - last comment by Jeeva   

> How DNA Computers Will Work
Posted by toabcd - 08-8-08 15:01 - 0 comments
Even as you read this article, computer chip manufacturers are furiously racing to make the next microprocessor that will topple speed records. Sooner or later, though, this competition is bound to hit a wall. Microprocessors made of silicon will eventually reach their limits of speed and miniaturization. Chip makers need a new material to produce faster computing speeds.
You won't believe where scientists have found the new material they need to build the next generation of microprocessors. Millions of natural supercomputers exist inside living organisms, including your body. DNA (deoxyribonucleic acid) molecules, the material our genes are made of, have the potential to perform calculations many times faster than the world's most powerful human-built computers. DNA might one day be integrated into a computer chip to create a so-called biochip that will push computers even faster. DNA molecules have already been harnessed to perform complex mathematical problems.
While still in their infancy, DNA computers will be capable of storing billions of times more data than your personal computer. In this article, you'll learn how scientists are using genetic material to create nano-computers that might take the place of silicon-based computers in the next decade.


A Fledgling Technology
DNA computers can't be found at your local electronics store yet. The technology is still in development, and didn't even exist as a concept a decade ago. In 1994, Leonard Adleman introduced the idea of using DNA to solve complex mathematical problems. Adleman, a computer scientist at the University of Southern California, came to the conclusion that DNA had computational potential after reading the book "Molecular Biology of the Gene," written by James Watson, who co-discovered the structure of DNA in 1953. In fact, DNA is very similar to a computer hard drive in how it stores permanent information about your genes.
Adleman is often called the inventor of DNA computers. His article in a 1994 issue of the journal Science outlined how to use DNA to solve a well-known mathematical problem, called the directed Hamilton Path problem, also known as the "traveling salesman" problem. The goal of the problem is to find the shortest route between a number of cities, going through each city only once. As you add more cities to the problem, the problem becomes more difficult. Adleman chose to find the shortest route between seven cities.
You could probably draw this problem out on paper and come to a solution faster than Adleman did using his DNA test-tube computer. Here are the steps taken in the Adleman DNA computer experiment:
1. Strands of DNA represent the seven cities. In genes, genetic coding is represented by the letters A, T, C and G. Some sequence of these four letters represented each city and possible flight path.
2. These molecules are then mixed in a test tube, with some of these DNA strands sticking together. A chain of these strands represents a possible answer.
3. Within a few seconds, all of the possible combinations of DNA strands, which represent answers, are created in the test tube.
4. Adleman eliminates the wrong molecules through chemical reactions, which leaves behind only the flight paths that connect all seven cities.
The success of the Adleman DNA computer proves that DNA can be used to calculate complex mathematical problems. However, this early DNA computer is far from challenging silicon-based computers in terms of speed. The Adleman DNA computer created a group of possible answers very quickly, but it took days for Adleman to narrow down the possibilities. Another drawback of his DNA computer is that it requires human assistance. The goal of the DNA computing field is to create a device that can work independent of human involvement.
Three years after Adleman's experiment, researchers at the University of Rochester developed logic gates made of DNA. Logic gates are a vital part of how your computer carries out functions that you command it to do. These gates convert binary code moving through the computer into a series of signals that the computer uses to perform operations. Currently, logic gates interpret input signals from silicon transistors, and convert those signals into an output signal that allows the computer to perform complex functions.
The Rochester team's DNA logic gates are the first step toward creating a computer that has a structure similar to that of an electronic PC. Instead of using electrical signals to perform logical operations, these DNA logic gates rely on DNA code. They detect fragments of genetic material as input, splice together these fragments and form a single output. For instance, a genetic gate called the "And gate" links two DNA inputs by chemically binding them so they're locked in an end-to-end structure, similar to the way two Legos might be fastened by a third Lego between them. The researchers believe that these logic gates might be combined with DNA microchips to create a breakthrough in DNA computing.
DNA computer components -- logic gates and biochips -- will take years to develop into a practical, workable DNA computer. If such a computer is ever built, scientists say that it will be more compact, accurate and efficient than conventional computers. In the next section, we'll look at how DNA computers could surpass their silicon-based predecessors, and what tasks these computers would perform.
A Successor to Silicon
Silicon microprocessors have been the heart of the computing world for more than 40 years. In that time, manufacturers have crammed more and more electronic devices onto their microprocessors. In accordance with Moore's Law, the number of electronic devices put on a microprocessor has doubled every 18 months. Moore's Law is named after Intel founder Gordon Moore, who predicted in 1965 that microprocessors would double in complexity every two years. Many have predicted that Moore's Law will soon reach its end, because of the physical speed and miniaturization limitations of silicon microprocessors.
DNA computers have the potential to take computing to new levels, picking up where Moore's Law leaves off. There are several advantages to using DNA instead of silicon:
• As long as there are cellular organisms, there will always be a supply of DNA.
• The larg