March 31st 2008
Here Comes The OLED
OLED (Organic.Light.Emitting.Diode) is a new display technology that promises to deliver thin, power efficient and bright displays. OLEDs (already popular in MP3 players and cell phones) have amazing potential - thin TVs, flexible displays, transparent monitors, white-bulb replacement, and more.
LCD works by having a backlight (white light) source, and then filtering this source to make colors. OLEDs however work by emitting color light. This has several advantages. It allows to make simpler and thus thinner and cheaper displays. It also means that OLEDs require less power. Think that when you have a screen that is completely black (but turned on), LCD will still require the whole white backlight to be emitted. With OLEDs, no energy is consumed in this stage! It is also possible to make flexible OLED displays, and even transparent ones, but this is obviously more challenging than a simple LCD-like display.
While OLEDs are heralded as the display technology of the future, they are already produced and used today. While making large panels is still a great challenge, smaller screens (up to 2″) are already produced in commercial quantities today. There are many MP3 players and cellular phones that use OLED displays. Companies such as Sony and Samsung use OLED displays in their leading models. The OLED market reached 500$ million in sales in 2005, and is expected to grow quickly in the coming years.
There are two main types of OLED screens
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March 30th 2008
Small Desktop Computers
Small desktop computers are smaller than traditional desktop models. It is a good choice in rooms where space is a problem. With small computers, users get sufficient space to keep other items like extra drives and circuit boards.
Small desktop computers are available as slim line models. The computer case is long and wide, similar to ordinary desktop models. The difference is in the height and thickness of the cases. These computers are designed using the same techniques and principles as in a generic computer system. It makes use of both internal and external storages. The system disc can be an internal storage unit. Backup devices and data storage discs can be external devices.
Small desktop computers have advanced features and capabilities unlike the ordinary digital computers. There are small computers with megabytes of memory and large disks. Some computers come with integrated monitor and keyboard. Some computers have robust design and thermal efficiency that can benefit the computers in a wide range of applications. These computers facilitate users to operate more than one processor at the same time. These computers can even function as a server.
Small desktop computers make use of microprocessors and other discrete electronic components. There can be electrostatic discharges from users to these devices. This discharge gets coupled at the circuit board that holds the microprocessor and other components. This may cause damage or destruction to the devices. There are a number of methods used in small computers to solve this problem. One way is to have metallic shields at the connecters of key boards or display interfaces to circuit boards.
Small desktop computers can be used for personal and business needs. It finds usage in areas where large volumes of information are to be stored. With computers, it is possible to perform three dimensional calculations with less computational expenses and to produce sophisticated graphics. In the medical field, these computers can be used to diagnose diseases.
Desktop Computers provides detailed information on Desktop Computers, Cheap Desktop Computers, Custom Desktop Computers, Used Desktop Computers and more. Desktop Computers is affiliated with Flat Screen Computer Monitors.
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March 29th 2008
Choosing A Camera For Dedicated Video Surveillance
There are many things that you must think about before you finally choose the proper equipment for you dedicated video surveillance system. The most important of these decisions is the camera that you will use. A poorly chosen camera can make the attempt virtually pointless, as items in view could be out of focus, unrecognizable, or just too dark to identify. There are certain things that you must be aware of before designing your surveillance system.
Obviously the price of the system is a major factor in deciding what equipment to buy. You need to be aware of the lighting at the location, in particular the amount of light and the way the lighting changes throughout the day. What kind of task is the system going to be used for? Will it be for documentation, alarms, identification, etc? Is the camera going to be used outside or indoors, and will it be hidden or visible? All of these things need to be identified while you are designing your system and considering what equipment to buy.
Not considering all details will probably result in wasted money as well as a system that doesn’t quite function as intended. This will cause you to miss the recording and surveillance opportunities that you are striving for. If you have the wrong equipment, then you won’t be able to identify the shoplifter in your store, or the suspicious looking person eying the kids a little too closely. Make sure you triple check all the requirements and get the appropriate system.
Find out why single family homes don’t need dedicated video surveillance systems.
Learn before you start planning at http://dedicatedvideosurveillance.com
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