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OPTICAL COMPUTING IN IT  by

 Sangeetha Priya 		10/5/2008 at 11:13
Optical computing means performing computations, operations, storage and transmission of data using light instead of electricity. Instead of silicon chips optical computer uses organic polymers like phthalocyanine and polydiacetylene.Optical technology promises massive upgrades in the efficiency and speed of computers, as well as significant shrinkage in their size and cost. An optical desktop computer is capable of processing data up to 1,00,000 times faster than current models.

Advantages

- Optical computing are cheaper or more powerful than conventional computers. - Within one data path several data sets can be transmitted parallel at the same time using different wavelengths or polarizations. data paths are able to cross each other without interference. - The superior velocity of light allow extreme processing speeds. - Optical computers are said to run much faster than electronic computers

Disadvantages

- The development of its price is still expensive - Optical components can be build small and compact but not really miniaturized - Optical computers may use a different architecture. So these programs cannot use the full optical computers - High-tech factory costs several millions up to billions of dollars to be built

Comparision of Optical computing with conventional computers

Optical computing

- Data paths are able to cross each other without interference - Based on two dimensions - High performance - Bottleneck could disappear - Less heat is released - Less noise - Change the shape and layout - The distance of communication does not matter - Long-range communication is possible. the data rate is very high and there is no crosstalk

conventional computers

- ...
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HDMI - THE LIFELINE OF HI-DEFINITION SIGNAL TRANSMISSION  by

 Sturat Mitchel 		10/5/2008 at 11:12
Hitachi, Panasonic, Sony, Toshiba, Philips, Thomson and Silicon Image came together to develop High Definition Multimedia Interface or HDMI. HDMI is a 19 pin compact plug and cable. It helps in connecting computers with other hi-definition audio-visual products.

The bandwidth available with HDMI is 5GBPS. 19 wires are wrapped inside one cable, which looks like an USB. Digital signals are transmitted through HDMI wires from digital audio/video sources like set top box, DVD players and satellite receivers, to a digital output device like a HDTV. The capacity of HDMI is barely extracted by a HDTV. It uses less than half the capacity of the HDMI. HDMI also carries 24- bit, 8 channel uncompressed audio as well as compressed formats like Dolby and DTS. The biggest benefit of HDMI is low cost and ease of use, as all audio and video is combined in one cable.

HDMI cables are made to comply with specific revisions of the HDMI standard. There are two categories of HDMI cables. HDTV resolutions and frame rates are supported by category 1 cables. For higher frame rates and resolutions, category 2 cables are required. There is no specification about the length of the HDMI cable. A HDMI cable can be 3’ to 50’ in length. A HDMI cable made of 24 AWG wire is better in performance than one made with 28AWG wire. To ensure best possible signal quality, the best of HDMI cables have gold plated connectors like analog wires. Apart from regular HDMI cables, Active HDMI cables ...
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WHAT IS NANOTECHNOLOGY?  by

 Najib Altawell 		3/12/2008 at 08:24
The idea behind Nanotechnology is that by manipulating atoms and/or molecules to build materials and structures directly, as well as by exploiting the unique properties of matter at the nanoscale (0.1 nm to 100 nm) then we are at a distinctive level where the name of Nanotechnology has been put forward to describe this kind of human engineering activity.

Obviously, here we are dealing with what we call nanostructures - a nanometre is one thousand million times smaller than a metre, about 3 - 4 atoms in width. To give you an example how small this scale is, well just imagine we blew up an orange to the size of the earth, the atoms of the orange would become visible, and the size of each atom would be about the size of a single cherry.

Another definition I came across several times concerning Nanotechnology is that - it is the result of a marriage between chemistry and engineering. It has been likened to traditional chemistry but without chemical reactions. Here we can envisage building things one atom or molecule at a time, using programmed nanoscopic robotic arms or equivalent methods. The question therefore arises .... is it possible to move one atom (or one molecule) from one location and relocate it to the desired place without difficulty - simply using the present available technology?

The answer is "yes, but with difficulty". At the same time, this process is limited at the present time. So transferring large numbers of atoms/molecules in a much faster ...
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TECHNOLOGY, CHANGE AND PROCESS CAPABILITIES  by

 Geno Bulzomi 		3/12/2008 at 08:23
Vince Poscente in his book, The Age of Speed (2008), pointed out that "we actually can do more in a given time than we could even five years ago. Therefore, the expectations we face to produce faster are often valid." The idea presented here is revealing, yet at the same time so well understood by everyone. No one can argue the fact that we can do more, faster, because of technology. In many cases we buy the latest technological tools to increase productivity and increase profits. We buy the technology and then proudly sit back and wait for the benefits to materialize. Unfortunately, more often than not, production value remains stagnate or increases only marginally. This causes leadership severe disappointment and fosters a mistrust of technology, or at least the salesman!

Is the technology not working? No, more than likely the technology is capable of increasing productivity, while reducing cost, just as the salesman pitched. The salesman is not selling bogus solutions. It is likely to be your internal processes. You buy new technology to produce faster, but you deploy it in the confines of old processes. Any new technology requires a review of existing processes. If you do not harness the capabilities of the technology and transform the process to utilize them, you will essentially negate any efficiency.

Processes should be viewed as dynamic and able to be modified to meet new circumstances. Let’s say the current process is only capable of producing 10 completed units in a day (purchase orders, ...
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THE HD DVD WAR IS OVER - BLU-RAY PREVAILS  by

 David Cant 		3/12/2008 at 08:22
The high definition DVD war is over. The challenger has thrown in the towel and the victors arm is held aloft.

The announcement by Toshiba that its HD DVD format was to be abandoned has confirmed expectations that Sony’s more expensive BLUE ray solution would prevail.

The two rival systems have been battling for two years now, initially racing neck and neck. The rot set in when Warner Brothers backed Blu-ray and said it would only issue films in that format in future.

One by one other content providers and retailers have added their vote for the Sony option.

The final nail in the HD DVD coffin appears to have been Wal-Marts decision to phase it out of their stores, announced earlier this month.

One hey reason for Sony getting the edge has been its development of Blu-Ray in its own Playstation 3, which means it had many more drives installed and working that its rivals.

As it makes its way to the failed formats Museums, to line up along-side that most famous exhibit, Betamax, those who have harvested in their own HD DVD player are left high and dry.

The one million people who bought one in good faith will have good reason to be miffed. Although prices came down from an initial almost £500 to £150, even that is a lot of money to have tied up in a player for which very few DVDs will now arrive on the shelves.

The key question today concerns plans for HD DVD units sitting in warehouses and on ...
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STEGANOGRAPHY AND THE ATTACKS  by

 Emmanuel Sodipo 		3/12/2008 at 08:21
Two aspects of attacks on steganography are detection and destruction of embedded message. Any object can be manipulated with the intent of destroying some hidden information whether an embedded message exist or not. [JOJ98].

Attacking steganographic algorithm is very similar to attacking cryptographic algorithms and similar techniques apply. If the original unmodified file used as a cover by the stegosystem is available to an attacker or investigator all he has to do is a bit-by-bit comparison with the suspect version in order to establish steganographic content. That is why publicly available files (sound files from CD or images from internet) should never be used as a cover. The strength of a steganographic algorithm depends on its ability to successfully withstand attacks.

A few of the possible attacks are as follows:

File Only: The attacker has access to the file and must determine if there is a message hidden inside. This is the weakest form of attack, but it is also the minimum threshold for a successful steganography. File only attack relies on statistical analysis to reveal the presence of a message in a file.

File an Original copy: In some cases the attacker may have a copy of the file with the encoded message and a copy of the original. If the two files are different, there must be some hidden information inside. The attacker can simply replace the message with the original to destroy the hidden information.

Reformat Attack: One possible attack is to change the format of the file. This can work because ...
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THAT’S NOT AN IPOD IN THE OFFICE ANYMORE - IT IS NOW A DATA LEAKAGE THREAT  by

 Dan Schutte 		3/12/2008 at 08:20
Cell phones, MP3 players, IPods, Instant Messaging, Hotmail accounts - all have come to be considered ’personal technologies’. Each employee usually has at least one and many all. They also have found their way into the workplace as a ’right to use’ without administration, since it is their personal property. While you want to show tolerance for an individual’s choices, be aware of the threats this choice can involve as well. Your entire data environment can become at risk. Read on to learn about End Point security and just how possible your data may be to leaving the building next to the top 40 song hits on an IPod.

Background

In the early days of personal computers, data files were transferred either by a dialup link or a floppy disk. Now there are a multitude of options to store and port data - flash drives, internet, email, IM, DVD and on. Many companies are beginning to develop strategies to monitor some of the more obvious methods of data transfer through email. Some are beginning to acknowledge instant messaging as a threat.

In order to have a cohesive defense, all access points need to be effectively controlled or the battle could be lost. What are still being widely overlooked are ’personal lifestyle devices’ that are now common among workers (i.e. MP3 players, IPods, cell phones, cameras). Almost every digital device today comes with gigabytes of storage capacity. Files can easily and quickly be uploaded or downloaded with these devices. How many of your sensitive ...
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DIGITAL SIGNALS GOODBYE TO ANALOG  by

 K Cantera 		3/9/2008 at 09:23
As this first decade of the 21st Century draws to a close, so also does the age of analog. When it comes to communications, analog has served humanity long and well, but the old technology is being phased out by governments and manufacturers alike, and within ten years, the old analog systems will likely be a technological footnote to history. Put simply, analog equipment cannot compete with the capacity of digital and, as a result of simple economics, it is destined to dwindle away. Of course, analog systems made sense when first created, for analog signals are able to duplicate virtually any natural phenomena, such as sound or light, which are analog inherently because they are infinitely variable.

With analog systems of communications, the biggest problem has always been noise. While analog offers the infinite variability that replicates the natural state of sound or light, converting those phenomena into an electrical signal and then back again into a sound or an image creates "noise." The term is used because it can literally produce noise in an audio system - the hiss or rumble that is heard in poor quality recordings. Noise also shows itself in the grain or "snow" that can trouble a TV signal. Noise affects an electronic signal at every stage of the communications process, and its effects add up.

Although a digital signal cannot directly represent an analog quantity, everybody know that a digital device like and Mp3 player offers excellent quality duplication of sound, which is, in fact, ...
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WIRELESS ROUTERS BUYING GUIDE  by

 Ryan Hodgson 		3/9/2008 at 09:21
Router Functionalities

Firewall

Firewalls are ideal for home networks. They help in protecting home use computers by stalling the destructive efforts of other official websites and potential hackers. This software or hardware device filters the information coming through the internet connection, flagging the information that is not to be allowed through. You can find some such models at:

VPN Pass through

VPN pass through feature of routers allows traffic between the endpoints and does not support one of the endpoints. This feature is ideal for routers of home use or small office setups; they are less expensive than a router with full VPN that supports the endpoints.

DHCP server

Dynamic Host Configuration Protocol (DHCP) servers can be implemented for windows based system. The server automatically assigns an IP address to the computer’s TCP/IP stack software.

Wireless Access Point

The performance of your network will depend on signal strength of the wireless access point. Before you position it, find out the exact location from where it will give the maximum network range.

DSL Modem

Digital Subscriber Line modems are faster than regular modems and can use the existing phone lines. Both internet connection and phone lines for telephone calls can be used simultaneously.

Voice over IP gateway

VoIP routers have both wireless networking feature and telephone terminal adapters. With this feature the network can access both Internet and voice communications.

Protocols

These are formats for transferring data between the various devices. The protocols determine the various aspects of the data like compression types, delivery and retrieval by devices and error checking. The standard protocols differ ...
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HIGH DEF DVD TECHNOLOGY FACES EXTERNAL THREATS  by

 Emily Sanderson 		3/9/2008 at 09:18
A lot of attention is paid to the fevered competition between Sony’s Blu-ray and Toshiba’s HD-DVD High Definition DVD formats, but many analysts and the general public ignore the threats that high def DVD technology in general face from other technologies. Unlike the original DVD format that was introduced almost a decade ago and the video cassette technology that came before it, high def DVD’s in general face competition from a number of other technologies that are threatening to make them obsolete before they even get a foothold in the market.

The most obvious source of competition comes in the form of all of the services that are offering movies in HDTV format for download over the Internet. For example, Sony’s Bravia HDTV sets can display a variety of HDTV videos that can be downloaded from the Internet. While this service has the disadvantage of only working with Bravia HDTV sets, an increasing amount of HDTV content is expected to be made available and it certainly provides a glimpse of how we can expect to get our HDTV content in the future.

Another service that provides HDTV programming is Vudu. Vudu is basically a set top box that can be used to download movies from the Internet and display them in high definition on an HDTV set. The only catch with Vudu is that the device downloads the movies in standard definition format and then upconverts them to HDTV format before displaying them on the screen. This system has the advantage of ...
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RUNNING A REVERSE PHONE LOOKUP  by

 Pauline Stradlen 		3/9/2008 at 09:17
Now imagine this- you have just had someone call you on the phone, and you need to find out the owner of the number ( this could be for several reasons I won’t go into now). What do you do? How do you go about finding the information on the person who owns that number? I know you’re going to say what about caller ID - well if it was that easy then your problem would be solved already. The best way to do this is to use a reverse phone lookup service. There are a lot of these available on the net, many claiming to be free. However, be careful that you read the fine print, any site that has quality information and a large phone number database will justifiably charge you for their services.

These services are normally not just limited to landlines. A reverse cellphone lookup can also be carried out at the same site. This is an easy way to track down information about the owner of any mobile phone number. If you suspect your husband/wife is cheating on you, if you think your children are hanging out with the wrong crowd, if you’re receiving prank calls, a reverse phone lookup service can get you what you want to know.

Cell phone numbers are generally considered and treated more privately than landlines, they are not therefore collected in any centralized database. Services that do put such a database together must therefore charge a fee to use them. This ...
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DO YOU NEED TO DO A REVERSE TELEPHONE LOOKUP?  by

 Marie Reynolds 		3/9/2008 at 09:16
The internet has become a great tool for anyone who is searching for specific information - and anyone needing to do a reverse telephone lookup can easily do a search on their own. There are some very good resources available online to find out who a phone number belongs to.

Have you recently noticed unusual phone numbers on your home phone, or your partner’s cell phone that you can’t explain? Unfortunately, this is very common and can indicate a possible infidelity by one of the people in the relationship. However, there are sometimes very good reasons for the phone numbers, but once the thought is there, it is difficult to see past our own thoughts.

If you need peace of mind, or just need to know one way or another if your partner is being unfaithful, it is actually a very simple process to find out the telephone number owner. The internet has websites that are dedicated to building up databases of phone numbers that allow you to type in a phone number to see who it belongs to. But, you need to be sure that it is a reputable site.

What should you look for in a phone number trace website? You need to know that the site has accurate information. If you find one that gives you all of the information for "free", you need to watch for hidden fees and you also need to question the reliability of the information. Most of the sites that have legitimate databases which they ...
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SAVING MONEY AND MAXIMIZING USE ON PREPAID PHONE CARDS  by

 Vanessa A. Doctor 		3/9/2008 at 09:15
A lot of individuals today make frequent calls to business associates, co-workers, family and friends. In doing so, they turn to the affordable and trusted means of communication- prepaid phone cards.

Prepaid phone cards are popular choices because these are convenient devices, it can be used anywhere and, and because you pay in advance, you will not be paying for any monthly bills. These devices are very popular among immigrants, expatriates, travelers, students, and those who frequently call overseas, or those who haven’t chosen a preferred long-distance service.

No Monthly Bills And Other Contracts To Sign

Choosing a specific call card is like p[laying Russian roulette, and the right card can make all the difference when it comes to savings and convenience. However, if you want to make the card truly work for you, you’ll need to shop around for the best one. If you’re one who just picked up a phone card recently, you’re in the same company as with everyone else who’s not into the regular service.

A lot of individuals today use these use to make more than 8 billion calls annually, according to data from the International Prepaid Communications Association. These communication tools are truly the favored choice of recent immigrants, students, military personnel, teens and travelers, senior citizens and small businesses. What makes these cards work wonders is that they are effective in controlling overhead expenses and lessening monthly bills.

Getting A Card Is Like Negotiating A Minefield Of Hidden Charges

While simply adding a good body finish to a commodity ...
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DO YOU KNOW WHAT SATELLITE RADIO IS AND HOW IT WORKS?  by

 Gregg Hall 		1/15/2008 at 09:47
Satellite radio probably the best thing that’s happened since the invention of TV. Satellite radio often called paid radio because you cannot get it through the regular stations that you pick up in a normal car radio. Therefore when you pay for these certain stations, you will get so much music that you will just not even know what to do with yourself.

This uses satellites give the subscriber their music and stations. The signal is from earth but then is sent to the satellites to get a received signal and start playing music. The signal is then broadcasted over an area so that the people with these satellite radios could pick up the many different stations. You can get a this type of radio and broadcast probably anywhere in the world. The signal that you will be using will be digital so you will be static free and will hear not scratchy noises in the music no more.

To start and get a subscription you are going to need to get a tuner or satellite radio which you can get anywhere like best buy or circuit city for about a hundred dollars. There are many different types that you can choose from. Some of them might be a radio that you can play through your system at home others will just be a radio that you can have in your car. The plug and play radio is going to be used in your car and you will be able to probably ...
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Blogs

Optical Computing in IT

 HDMI - The Lifeline Of Hi-Definition Signal Transmission

 What is Nanotechnology?

 Technology, Change And Process Capabilities

 The HD DVD War Is Over - Blu-Ray Prevails

 Steganography and the Attacks

 That’s Not an IPod in the Office Anymore - It is Now a Data Leakage Threat

 Digital Signals Goodbye to Analog

 Wireless Routers Buying Guide

 High Def DVD Technology Faces External Threats

 Running A Reverse Phone Lookup

 Do You Need To Do A Reverse Telephone Lookup?

 Saving Money And Maximizing Use On Prepaid Phone Cards

 Do You Know What Satellite Radio Is And How It Works?

 Using GPS to Track Cell Phones

 Vehicle Tracking Systems - You May Never Be Lost Again

 PlayStation DVDs for Your PS

 7 Top Reasons to Get an iPod Download Service

 Latest Techniques in Electronics and Related Equipment

 How Electronic Components Have Changed The Face Of Entertainment

 Apple Has Something in the Air

 GPS Systems

 A Perspective on Visual Communication

 Are Hidden Cameras Watching You Right Now

 A Beginners Guide To Choosing A Digital Camera

 The Nintendo Wii is NOT the Game Cube

 Personal Alarm FAQ’s

 Concealing the Talon Mini Stun Gun

 Self Defense and Stun Guns

 Caught My Dog On Tape - One Page Guide on Security Cameras

 Find Yourself With Your Cell Phone

 Webcam Basics

 Making it Easy to Compare Cellular Plans

 Radio Ga-Ga: How to Listen to Internet Radio

 How to Get Videos on Your iPod

 Conference Calling – Saving Time And Money

 Make Your Client’s Life Easier: The Power Of An Extranet

 Your Life On DVD

 Tell Your Phone Company To VoIP Off!

 Broadband Phone Service is Not VoIP

 IPTV - The Next Revolution!

 Conference Calls - Stay Connected!

 Quantum Communication

 Is Your VOIP Service Secure

 VOIP Small Business or Home Business Advantage

 Satellite Radio: XM Radio or Sirius

 Google Earth News: Reviewed

 Ultra Low Noise

 Data loggers: the way to monitor a freezer or cooler’s temperature

 Artificial intelligence : myths and realties

 Next Generation Search Engines

 Best Practices In Solving Your Network Monitoring Dilemmas