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Liquid Crystal display or LCD monitor is a thin and flat device for display. It is made by large number of color or monochromatic pixels which are arrayed in way of a light source or a reflector. It uses very small amount of electric power and hence is used often in battery powered electronic devices. The technology used is very much dissimilar to CRT technology which is used by many desktop monitors. It was used only on notebook computers for a very long time. Only recently ...

The Technology In A LCD Monitor

The Technology In A LCD MonitorLiquid Crystal display or LCD monitor is a thin and flat device for display. It is made by large number of color or monochromatic pixels which are arrayed in way of a light source or a reflector. It uses very small amount of electric power and hence is used often in battery powered electronic devices. The technology used is very much dissimilar to CRT technology which is used by many desktop monitors. It was used only on notebook computers for a very long time. Only recently they have been offered as an alternative to CRT monitors. They take up very less desk space and are much lighter than the CRT monitors. But they are also quite expensive.Each pixel of LCD monitor display has a layer of aligned molecules between two electrodes which are transparent and two polarizing filters. Because there is no liquid crystal between the aligned polarizing filters, light which has passed through the first filter will be blocked by the second polarizer. The surface which is in contact with the crystal is treated to align it in particular direction. The direction of alignment is defined by direction of rubbing.Resolution, in terms of horizontal and vertical size expressed in pixels, is native supported for the best display effects. This is one of the things that sets LCD monitor apart. Dot Pitch is defined as the distance between two adjacent pixels. It is the minimum for sharper image. Each pixel is divided into three cells, or sub pixels. These are colored red, green and blue. Each sub pixel can be controlled independently for millions of combinations and hence colors. Older CRT monitors use phosphors for sub pixel structure. The analog electron beam though does not hit the exact sub pixel.Color components can be arrayed in various geometries, depending on how the monitor is to be used. If the software being used knows the geometry, it can be used to increase the apparent number of pixels using sub pixel rendering. This kind of technique is often used in text anti-aliasing. LCDs which are used in digital watches and calculators have separate contact for each segment. Thus an external dedicated circuit charges each segment individually. This is not possible if the number of elements increases.Small monochrome displays like the ones used in Personal Organizers or in older laptops have passive matrix like structure and employ super twisted nematic or double layer STN technology. Here, each row or each column has a single electrical circuit and the pixels are hence addressed according to rows and columns. But as the number of pixels increases, the response time decreases and the technique no longer remains feasible.Color displays used in modern LCD monitors and televisions use active matrix structure. An array of thin film transistors (TFT) is added. Each pixel has a dedicated transistor. Active Matrix display looks brighter and sharper than passive matrix display of similar size and has better response time.LCD technology has some critical drawbacks too. Resolution of a CRT monitor can be changed without introduction of any new artifact. But LCDs can produce only their native resolution and non native resolutions are achieved by scaling. The blacks of LCDs are actually grey because of presence of a light source. This results in lower contrast ratio when compared to CRTs. LCDs with cheaper parts cannot display as many colors plasma or CRT counterparts.Also, LCD display has longer response time when compared to Plasma or CRT counterparts. Input lag is also present and the viewing angle is limited. In spite of these drawbacks, LCD display is quickly gaining prominence.

Ergonomics At Work Osha Is On The Job

Ergonomics At Work Osha Is On The Job

The French poet Charles Baudelaire observed back in the 1800s, Inspiration comes of working every day. Most people do work every day, and unfortunately its not only inspiration that comes of it. Repetitive stress injuries (RSI) are also the result of every day tasks performed again and again while operating a computer. Relief is in sight, however, thanks in part to a particular government agency. This organization is raising awareness and promoting solutions 24/7.The Occupational Safety and Health Administration (OSHA) has a mandate to protect employees from being hurt in the workplace. James Hodgson, Secretary of Labor, established OSHA within his department in 1971. This was in response to the Occupational Safety and Health Act, legislation he helped author. For the first time in U.S. history, the government stepped in to make sure that workers were as protected as possible from illness, injury, and death on the job. And OSHA had its work cut out for it. Construction, chemical, and agricultural workers were among the many who needed better safety standards in their industries.But as computer use rose, and the related RSI grew, OSHA turned its attention to this new problem. In recent years, OSHA has developed a four part program designed to reduce injuries and illnesses associated with computer use on the job. The four parts areGuidelines, Outreach and Assistance, Enforcement, and the National Advisory Committee.Guidelines are recommended practices that are developed for specific tasks and industries. These are voluntary, not mandatory. Employers use the guidelines to identify and modify risks in the workplace. Implementing these practices reduces injuries related to the way people do their jobs.The Outreach and Assistance component of this program is aimed at businesses of all sizes. OSHA wants companies to take a proactive stance when it comes to preventing RSI. To help employers, OSHA designed an extensive array of tools that educate, analyze, and train people regarding the ergonomics of their jobs. Available to the public for free on the OSHA website, the computer workstation portion of the Ergonomics eTools is a comprehensive guide to proper computing techniques.Included in this section is:Good Working Position (talks about every part of the body and what the best placement is for preventing RSI)Workstation Components (all the technology and furniture you commonly use is listed here with possible hazards, solutions, and tips)Checklist (a great way to evaluate how youre doing ergonomically while you operate a computer)Work Process (focuses on the physical movements of computer use, with hazards to watch for, more solutions, and tips)Workstation Environment (information about factors people often dont think about such as lighting, ventilation, and glare)But Outreach and Assistance is more than the Ergonomic eTools. It has industry guidelines, cooperative programs, ergonomic analysis info, and success stories. It even has a checklist with tips for new purchases. It is chock full of valuable information for everyone from the individual computer user to the captains of industry.OSHA persists in its campaign to help employers and employees prevent Repetitive Stress Injuries. If the folks at OSHA have their way, inspiration will be the only result of long hours of work in front of a computer. Baudelaire would approve

Apple iPhone To Launch In The UK

Apple iPhone To Launch In The UK

Excitement is building with just over a week to wait until the launch of the Apple iPhone in the UK. O2 have signed a deal with Apple which guarantees the network exclusive rights to provide contract deals for the iPhone and will surely produce a huge surge in customers. Other retailers such as The Carphone Warehouse are already providing customers with a preview of the handset price and O2 tariff options.The Apple iPhone looks fantastic. If fact it is looks and works so good that Apple has decided to base future iPod designs on the iPhone. The touch screen interface is revolutionary in the world of mobile phones. Although it has been done before on other mobile phones and PDAs, it has never been quite in the same style or manner that the iPhone offers. The Apple iPhone brings all the capabilities you would expect from a top of the range iPod including music and video, a 3.5-inch widescreen display, an 8GB flash drive and allows you to connect to your iTunes library. The battery life is far better than a normal mobile phone and allows up to 8 hours talk time. WiFi and GPRS connectivity allow for fast email and Internet browsing within the simple and easy to use Safari browser.But the Apple iPhone is more about the experience. Apple has spent a lot of time getting their user interface just right and the result is sublime. For starters the iPhone automatically recognises whether you are holding and viewing the phone horizontally or vertically and adjusts the screen accordingly. The touch screen does not only respond to simple button touches but also to finger movements. For example to scroll through your contacts or play lists you simply slide your finger across the screen and the iPhone responds as a computer software program would when you use the scroll bar. There are also certain finger actions which allow you to zoom in and out when viewing web pages or photos. Even the keypad lock is operated by sliding your finger across the phone to prevent you from mistakingly using the iPhones touch screen buttons. There is one single traditional button at the bottom of the iPhone which allows you to quickly return to the mail menu.The Apple iPhone only includes a 2 megapixel camera which is far behind the current technology supplied through other mobile phone manufacturers. Surprisingly there is no option to capture video through the iPhone camera which, when you consider that Apple products focus a lot on allowing users to watch video, seems very peculiar. This gives you the feeling that the camera was a last minute add-on and was not entirely thought through properly.The iPhone breaks the mold and has created a huge jump in mobile phone user interface displays which other mobile phone manufacturers must be scurrying around to try and catch up with Apple. Although there are currently some other fantastic phones on the market, such as the Nokia N95 which offers greater technology, the Apple iPhone is about to become the best selling mobile phone of the year, partly though the hype it has received but mainly because it is such a fantastic revolutionary product.

The Evolution Of Ipods From Their Appearance To The Ipod Video

The Evolution Of Ipods  From Their Appearance To The Ipod Video

The newest and most popular innovation in iPod technology is, for sure, the iPod video. Still, getting to this innovative device is just the result of a long research through the history of the iPod making at http://www.10phone.com . The appearance of the iPod was owed to an increased marketing request: the lack of quality of the digital music players was noticeable to the interested consumers, as opposed to the growing number of digital devices, such as cameras, camcorders and organizers. Due to this fact, the Apple industries established a team of qualified engineers in order to develop the mechanism and design of the soon to be first iPod, which resulted in less than a year of technical and practical research. The launching of the new and exiting product was held on the 23rd of October 2001 and soon, the market embraced the new product. The evolution from the first iPod, which was revealed almost 5 years ago, till the iPod video reveals the intense and permanent research of the specialized engineers. The next significant step in the evolution of this device was the release of the 2 versions iPod, for both Mac and Windows users, which highly increased the sales and the number of potential customers. Actually, the iPod sold at such a high rate, that the permanent improvement of the product, in order to maintain the leading position on the market, was a necessary request (the selling rate recorded over 42 million units since the release of the product). In 2005, the new and better iPod was revealed, when celebrating the 4th generation of these devices; the new model introduced, for the first time, the color screen. In the spring of 2006, the Samsung company announced that they were about to provide the media processor for a new iPod model, an improved version of the Apples device. Soon after, the 5th generation of iPods introduced the iPod video, meaning it has video playback capacities, video playing and better organization features. The launching was celebrated together with the innovative new models of iPods: the iPod nano, with color screen and the iPod shuffle, which were the best sellers of 2005. The 5th generation of the iPod was about to reveal many new and exiting features of the small device, all under the slogan One more thing... Basically, the iPod video or the video iPod was available on the market in both 30 GB and 60 GB capacity models, had ability to play both MPEG-4 and H.264and much higher resolution, up to 480/480. Having a 16-bit color screen and being able to display all kinds of videos on a TV set, the new product was a market hit since its appearance. Regarding the design, the new iPod comes, as the previous iPod (the nano model of the 4th generation) in 2 colors, white and black, but it has a multitude of applications and improved features: World Clock, Stopwatch, and Screen Lock applications, a smaller earphone, a thin slipcase, AC adapter and FireWire cable. Regarding the dimensions, the new iPod is 4.1 x 2.4 x 0.43inches for the 30GB version and 4.1 x 2.4 x 0.55inches for the 60GB version (which, in the case of the new model, are marketed at the same price). The screen size was modified to 2.5inches (6.35cm) diagonally, 0.5inches (12.7mm), meaning that the video iPod screen is larger than the previous one. Even more, the product is thinner than the last model, iPod nano, and the battery life increased from 16 hours to 20 hours. Still, being a video device, watching movies reduces the life of the battery to around 2 to 3 hours. With an exiting and evolving history, the iPod manages to be one of the most innovative products on the digital devices` market, with millions of customers all around the world and increasing sells.

Evolution Of The Digital Camera

Remember the good old days, when buying a digital camera meant choosing between two or three models? That was the year 1995, and there were literally only three digital cameras which had been introduced for the consumer level marketthe Apple Quicktake 100, the Kodak DC40, and the Casio QV-11. Back then, it was easy to get information about each camera and decide which would work best for you. Well, those days are definitely gone. Now, if you want a new digital camera youll have to sort through hundreds of different models and make countless decisions, like how many megapixels youd like your camera to have, what type of media you want your camera to store your images on, and what levels of digital and optical zoom youll need...not easy tasks, especially if like me youre not sure what a megapixel is. I recently decided that my old film camera needed an update and made the momentous decision to buy my first digital camera. Though Ive always been one of those people who shies away from new technology, friends and family had been telling me for years that it was time to go digital. According to them, the benefits of having a digital camera far outweighed my fear of high-tech gadgets. They told me that I could save a fortune on film and developing costs, that I could view my pictures instantly, edit them on my own computer, and print only the ones I wanted. So, I decided it was time to jump on the technology bandwagon and find myself a simple little digital camera.Easier said than done. Several disappointing trips to the electronics stores in my area left me confused and camera-less. Ive never been intimidated by salespeople, but the electronics stores were completely overwhelming. I had no idea there were so many "digital cameras" on the market today and had trouble even understanding what the salespeople were talking about when they pitched their products! Megapixels, CF, CCD, dpi, MMCdoes anyone know what these terms mean? Finally I decided to try my luck on the Internet, where I could at least conduct the search on my terms, without hovering salespeople, in the comfort of my own home.I tried the big online shopping sites first, but found most of them even more overwhelming and confusing than the stores. Ive been using the Internet for years, but I had difficulty finding my way around most of these sites. Not only that, but there were even more digital cameras to choose from than in the stores! I hadnt thought it possible. I needed guidanceunbiased guidance in language I could understand. Finally, I came across a new website called www.techselector.com. The site promised to help me find the right product every timein four simple steps. After my previous experiences I had my doubts about this, but decided to give it a shot. I was instructed first to choose the category of product I was looking for digital cameras and then to complete a short multiple choice questionnaire. I expected the questionnaire to be tedious, full of terms I wouldnt understand, but it wasnt. It was simple, and any technical terms were explained to me in everyday language. After I completed the questionnaire, the site generated my own personal Product Report, which listed the best products for me based on my questionnaire answers. The Report was easy to understand I could see pictures of the products, view detailed specifications sheets, and compare different products. After a few minutes of reading through my Product Report, I made a decision and with the click of a button, I purchased my first digital camera. Sure its not 1995 anymore and there are considerably more than three digital cameras to choose from, but the cameras today have amazing features we couldnt have even imagined back then. Dont let the overwhelming selection of available models and the confusing technical jargon deter you from getting a great new cameraor any other new high-tech gadget. Techselector.com features a number of different product categories, tech guides, and glossaries which can help you understand all the terms and features. Best of all, the site can help you to sort through the different products and find the ones that will suit you best quickly and easily. My new digital camera arrived a few weeks ago, and already Ive almost forgotten what it was like to buy film. Had I known it would be so easy to find the perfect digital camera for me, Id have done it a long time ago.

Protect Your Computer Against Spyware

Everyone has heard of the need for antivirus and anti-spyware programs, but some people still dont realize what spyware is, or why its so dangerous. Spyware is not the same as a computer virus. Viruses corrupt files and destroy data. Spyware generally keeps track of where you go online, and sends this information to advertising agencies who then use the data for various purposes. It can also change your home page, slow down computer performance, and the more dangerous types log your keystrokes for possible password and credit card number gathering schemes. Perhaps the most insidious thing about spyware is that it is often installed without our knowledge free programs online can sometimes be the culprit, but spyware is also sometimes downloaded and installed simply by visiting certain websites that exploit security problems in various browsers. Preventing the spread of spyware is an important aspect of computer security. Spyware and other unwanted software can invade your privacy, liter your machines with pop-up windows and even make your computer crash. Just as we should keep passwords safe, we should also take steps to ensure that our passwords arent compromised in the first place. There are several anti-spyware programs on the market, both paid and free. One of the best places to search for reputable software is a site like download.com. However, even the best anti-spyware program wont do much if its not kept up-to-date and run regularly. As part of computer security, spyware should be updated once every 24 hours, and your computer should be scanned once a day, with a full scan once a week just to be on the safe side. Also stay away from questionable websites that try to get you to download and install software that you are unsure about. With a little effort, its possible to keep your confidential data safe and your computer spyware free.

Summary

Liquid Crystal display or LCD monitor is a thin and flat device for display. It is made by large number of color or monochromatic pixels which are arrayed in way of a light source or a reflector. It uses very small amount of electric power and hence is used often in battery powered electronic devices. The technology used is very much dissimilar to CRT technology which is used by many desktop monitors. It was used only on notebook computers for a very long time. Only recently ...