How to Increase "LAMP" life of a Multimedia or a Projector?

 How to Increase "LAMP" life of a Multimedia or a Projector?

INTRODUCTION:

                    

Lamp life for a projector will vary based on many factors including application, installation, intake of cool air and exhaust of hot air, usage and proper maintenance. Heat buildup can reduce lamp life and even damage your projector.

" Here are some tips to help your projector lamps last longer."

1. Once you turn on your projector, wait at least five minutes before turning it off to allow the fan to properly cool the unit. After the fan has cooled your projector, you may unplug it and store it as desired.
2. Do not obstruct the air intake or exhaust vent. Paper should not be placed on top of a projector, or where vents are located.
3. Keep the exhaust vent at least two feet from any object.
4.If the projector is built into a compartment, wall, ceiling or shelf mount, the minimum distance requirement (usually at least two feet) stated in your owners manual must be maintained.

5. Clean the projector's air intake filter every three to six months -- or more frequently -- based on your operating environment.
6. Do not move your projector until the lamp has cooled (about five minutes).
7. Run your projector for two weeks and/or 20 hours shortly after your purchase. If the lamp is going to fail, it will usually occur within the first ten hours of operation. Lamp warranties typically last just 90-180 days from the date of purchase, rather than the first installation.
8. When you purchase a replacement lamp for your projector, remove the existing lamp and use the old lamp as your spare. If your projector is new, test the original lamp for the two weeks/20 hours before removing and storing as a spare.

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What is a Power-Supply & How does it Works

 What is a Power-Supply & How does it Works? A knowledge based Aticle

Definition:

             A power supply is a hardware component that supplies power to an electrical device. It receives power from an electrical outlet and converts the current from AC (alternating current) to DC (direct current), which is what the computer requires. It also regulates the voltage to an adequate amount, which allows the computer to run smoothly without overheating. The power supply an integral part of any computer and must function correctly for the rest of the components to work.

HOW IT WORKS?

                       

If there is any one component that is absolutely vital to the operation of a computer, it is the power supply. Without it, a computer is just an inert box full of plastic and metal. The power supply converts the alternating current (AC) line from your home to the direct current (DC) needed by the personal computer. In this article, we'll learn how PC power supplies work and what the wattage ratings mean.

In a personal computer (PC), the power supply is the metal box usually found in a corner of the case. The power supply is visible from the back of many systems because it contains the power-cord receptacle and the cooling fan.

Power supplies, often referred to as "switching power supplies", use switcher technology to convert the AC input to lower DC voltages.

The typical voltages supplied are:

1.  3.3 volts
2.  5 volts
3. 12 volts

                   The 3.3- and 5-volts are typically used by digital circuits, while the 12-volt is used to run motors in disk drives and fans. The main specification of a power supply is in watts. A watt is the product of the voltage in volts and the current in amperes or amps. If you have been around PCs for many years, you probably remember that the original PCs had large red toggle switches that had a good bit of heft to them. When you turned the PC on or off, you knew you were doing it. These switches actually controlled the flow of 120 volt power to the power supply.

Today you turn on the power with a little push button, and you turn off the machine with a menu option. These capabilities were added to standard power supplies several years ago. The operating system can send a signal to the power supply to tell it to turn off. The push button sends a 5-volt signal to the power supply to tell it when to turn on. The power supply also has a circuit that supplies 5 volts, called VSB for "standby voltage" even when it is officially "off", so that the button will work.

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What is "WWW"? & What is the Purpose of It.

 What is "WWW"? & What is the Purpose of It.

INTRODUCTION:

                                               The World Wide Web (abbreviated as WWW)  commonly known as the web) is a system of interlinked hypertext documents accessed via the Internet. With a web browser, one can view web pages that may contain text, images, videos, and other multimedia and navigate between them via hyperlinks.

 In March 1989 Tim Berners-Lee, a British computer scientist and former CERN employee, wrote a proposal for what would eventually become the World Wide Web. The 1989 proposal was meant for a more effective CERN communication system but Berners-Lee eventually realised the concept could be implemented throughout the world. Berners-Lee and Belgian computer scientist Robert Cailliau proposed in 1990 to use hypertext "to link and access information of various kinds as a web of nodes in which the user can browse at will",and Berners-Lee finished the first website in December of that year. Berners-Lee posted the project on the alt.hypertext newsgroup on 7 August 1991.

Definition Save to Favorites Examples

                                                                                                Collection of internet resources (such as FTP, telnet, Usenet), hyperlinked text, audio, and video files, and remote sites that can be accessed and searched by browsers based on standards such as HTTP and TCP/IP.Also called the web, it was created in 1989 by the UK physicist Tim Berners-Lee while working at the European Particle Physics Laboratory (called CERN after its French initials Conseil Europeen de Reserches Nucleaires) in Switzerland, as an easier way to access information scattered across the internet.

What is the Purpose of it?

                            A system of Internet servers that support specially formatted documents. The documents are formatted in a markup language called HTML (HyperText Markup Language) that supports links to other documents, as well as graphics, audio, and video files. This means you can jump from one document to another simply by clicking on hot spots.Not all Internet servers are part of the World Wide Web.There are several applications called Web browsers that make it easy to access the World Wide Web; Two of the most popular being Firefox and Microsoft's Internet Explorer.

NOTE: "World Wide Web is not synonymous with the Internet."

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Some Tweaks and Tips for Windows

Some Tweaks and Tips for Windows

Today I will explain some Tips that are used mostly in the Windows Family.

                                                
1. You can switch users without going through the Welcome screen: From Task Manager,

go to the Users tab, right-click a user, and select Connect.

2. Hold down the shift key in the shutdown dialog to change "Stand By" to "Hibernate". Or just press H to hibernate instantly. You can even use the Power Control Panel to configure your power button to hibernate.

3. To disable the password when resuming from standby or hibernation, open the Power Control Panel and uncheck "Prompt for password after returning from standby" on the Advanced tab.

4.You can rename multiple files all at once: Select a group of files, right-click the first file, and select "Rename". Type in a name for the first file, and the rest will follow.

5. Hold down the shift key when switching to thumbnail view to hide the file names. Do it again to bring them back.
6. When dragging a file in Explorer, you can control the operation that will be performed when you release the mouse button:

7. Hold the Control key to force a Copy.

8. Hold the Shift key to force a Move.

9. Hold the Alt key to force a Create Shortcut.

10. If you create a file called Folder.jpg, that image will be used as the thumbnail for the folder. What's more, that image will also be used as the album art in Windows Media Player for all media files in that folder.

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 Secrets of Main Computer Hardwares

Introduction:

In this article we will discuss about RAM, Power Supply and Motherboard. Basically These Three hardwares makes a PC alive to work for us. So lets start

"first of All we will discuss about RAM."

What is RAM and why a PC needs It.

RAM stands for Random Access Memory and is the most common type of memory used in computers. A computer's RAM is the memory used to store data and programs on a temporary basis. The RAM is compared to short-term memory,as it stores applications and information that is actively used while the system is on.In comparison, the hard drive, the long-term memory, stores all programs and information permanently,whether the computer is on or not.The amount of RAM directly affects a computer’s performance. It makes computer faster.

 What is Power-Supply and why Computer Needs It.

A power supply is a component that supplies power to at least one electric load. Typically, it converts one type of electrical power to another, but it may also convert a a different form of energy - such as solar, mechanical, or chemical - into electrical energy.A power supply provides components with electric power.The term usually pertains to devices integrated within the component being powered. For example, computer power supplies convert AC current to DC current and are generally located at the rear of the computer case, along with at least one fan.

 What is Motherboard and why a System needs it?

The motherboard is a large printed circuit board, which has lots of chips, connectors and other electronics mounted on it. Computer nerds simply call it a board. Inside the PC, data is constantly being exchanged between or via the various devices Most of the data exchange takes place onthe motherboard itself, where all the components are connected to each other:

Below in Diagram I have shown each and everything about Motherboard.

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