How To Make An Undeletable Folder

Sometimes happens that someone is deleting a folder, which is very important to you .If you want to avoid anything similar in future you can protect your important files in a folder that is undeletable.

1. Open cmd ( Type in Run option, the command 'cmd' or navigate to All Programs->Accessories-> Command Prompt)

2. In cmd change to the directory that you want ( you can use the commands " cd..." to exit the curent folder and "E:" for example to change from your current drive to E drive.

3. Type md \lpt1\\ and press Enter, the folder will be created now on your computer.

4. If you want to delete it or rename it

it will appear error message:

5. If you want to delete it just go to 'cmd', navigate to the directory and type rd \lpt1\\ and press Enter.

The folder will be deleted now.

Device Driver

In computing, a device driver or software driver is a computer program allowing higher-level computer programs to interact with a hardware device.

Drivers typically communicates with the device through the computer bus or communications subsystem to which the hardware is connected. When a calling program invokes a routine in the driver, the driver issues commands to the device. Once the device sends data back to the driver, the driver may invoke routines in the original calling program. Drivers are hardware-dependent and operating-system-specific. They usually provide the interrupt handling required for any necessary asynchronous time-dependent hardware interface.

A device driver simplifies programming by acting as an abstraction layer between a hardware device and the applications or operating systems that use it. The higher-level application code can be written independently of whatever specific hardware device it will ultimately control, as it can interface with it in a standard way, regardless of the underlying hardware. Every version of a device, such as a printer, requires its own hardware-specific specialized commands. In contrast, most applications utilize devices (such as sending a file to a printer) by means of high-level device-generic commands such as PRINTLN (print a line). The device-driver accepts these generic high-level commands and breaks them into a series of low-level device-specific commands as required by the device being driven. Furthermore, drivers can provide a level of security as they can run in kernel-mode, thereby protecting the operating system from applications running in user-mode.

Everyday some new hardware device is released in the market or the Microsoft corp. releases some drivers for every version of Windows possible. It is never possible to keep oneself updated with all the drivers possible. There are some devices with which the device drivers are not supplied like HP, Dell etc. For these one can easily get hp drivers or dell drivers.

It is very important for a computer user to keep his/her computer with all the latest drivers possible because this will ensure the device's better performance and will also enhance the device capabilities.

Direct Satellite Television

Satellite television or Direct TV is television delivered by the means of communications satellite and received by a satellite dish and set-top box. In many areas of the world it provides a wide range of channels and services, often to areas that are not serviced by terrestrial or cable providers.

The first satellite television signal was relayed from Europe to the Telstar satellite over North America in 1962. The first geosynchronous communication satellite, Syncom 2 was launched in 1963. The world's first commercial communication satellite, called Intelsat I (nicknamed Early Bird), was launched into synchronous orbit on April 6, 1965. The first national network of satellite television, called Orbita, was created in Soviet Union in 1967, and was based on the principle of using the highly elliptical Molniya satellite for re-broadcasting and delivering of TV signal to ground downlink stations. The first domestic North American satellite to carry television was Canada’s geostationary Anik 1, which was launched in 1972.[1] ATS-6, the world's first experimental educational and Direct Broadcast Satellite, was launched in 1974. The first Soviet geostationary satellite to carry Direct-To-Home television, called Ekran, was launched in 1976.

There are three primary types of satellite television or DirectTV usage: reception direct by the viewer, reception by local television affiliates, or reception by headends for distribution across terrestrial cable systems.Direct to the viewer reception includes direct broadcast satellite or DBS and television receive-only or TVRO, both used for homes and businesses including hotels, etc.

Direct broadcast satellite, (DBS) also known as "Direct-To-Home" is a relatively recent development in the world of television distribution. “Direct broadcast satellite” can either refer to the communications satellites themselves that deliver DBS service or the actual television service. DBS systems are commonly referred to as "mini-dish" systems. DBS uses the upper portion of the Ku band, as well as portions of the Ka band.

There are many companies that provide the direct to home satellite television service with many different kinds of Direct TV Packages. One Direct TV Package may vary from the other in terms f the number of channels provided or the cost of the package. As there are many companies there is a variety to choose from and there is always something satisfactory for every type of customer.

Trailers

A Trailer is generally an unpowered vehicle pulled by a powered vehicle. Commonly, the term trailer refers to such vehicles used for transport of goods and materials.Sometimes recreational vehicles, travel trailers, or mobile homes with limited living facilities where people can camp or stay have been referred to as trailers. In earlier days, many such vehicles were towable trailers.

Some trailers are made for personal (or small business) use with practically any powered vehicle having an appropriate hitch, but some trailers are part of large trucks called semi-trailer trucks for transportation of cargo.

Enclosed Trailers and motorcycle trailers can be towed by commonly accessible pickup truck or van, which generally require no special permit beyond a regular driver's license. Specialized trailers like open-air motorcycle trailers, bicycle trailers are much smaller, accessible to small automobiles, as are some simple trailers, pulled by a drawbar and riding on a single set of axles. Other trailers, such as utility trailers and travel trailers or campers come in single and multiple axle varieties, to allow for varying sizes of tow vehicles.

There also exist highly specialized trailers, such as genset trailers and their ilk that are also used to power the towing vehicle. Others are custom-built to hold entire kitchens and other specialized equipment used by carnival vendors. There are also trailers for hauling boats.

Nowadays trailers are gaining popularity very fast and people witha general well to do background generally want to possess a trailer.  There are many kinds of trailers like race car trailers, living quarter trailers, dump trailers. These trailers are nowadays availlable online also. People can pick the design they want just by sitting at home and can also get a finance scheme from various finance companoes if they want. So ultimately you just dont need to do any thing, just sit at home and click some links and buttons and you are done with buying your trailer.

Registry File Extension

File Extension is a three-digit designation at end of a file name that tell the computer what format the file has been saved in. (Examples: .doc, .txt, .pdf, .psd) Each different type of file has a different file format. A file format specifies how information is organized. 

Filename extensions were used in Digital Equipment Corporation (DEC) operating systems (for example, TOPS-10, OS/8 and RT-11). CP/M adopted the convention and MS-DOS, as a re-implementation of CP/M, did so as well.

The DEC operating systems internally split the filename into a "base name" and a filename extension, with the "base name" limited to five to eight characters (initially nine in RSX and VMS) and the extension limited to two or three characters; when a filename/filename extension combination was typed in commands, a dot (.) was placed between the filename and filename extension. CP/M worked the same way; the filename was limited to eight characters and the filename extension was limited to three characters, with a dot between them. Early versions of the FAT filesystem used in MS-DOS and Microsoft Windows imposed the same limitations. This is sometimes referred to as the 8.3 filename convention, and since the word filename is eight letters long and ext is a reasonable abbreviation for extension, it can be generalized as:

FILENAME.EXT

The filename extension was originally used to easily determine the file's generic type. The need to condense a file's type into three characters frequently led to inscrutable extensions. Examples include using .GFX for graphics files, .TXT for plain text, and .MUS for music. However, because many different software programs have been made that all handle these data types (and others) in a variety of ways, filename extensions started to become closely associated with certain products—even specific product versions. For example, early WordStar files used .WS or .WSn, where n was the program's version number. Also, filename extensions began to conflict between separate files. One example is .rpm, used for both RPM Package Manager packages and RealPlayer Media files; others being .qif, shared by DESQview fonts, Quicken financial ledgers, and QuickTime pictures, and .gba, shared between GrabIt scripts and Game Boy Advance ROM images.

People often have a belief that file extension problems are quite normal, but they do not know that these problems generally occur due to the registry. Many a times it happens that a software necesarry to run a particular kind of file extension is already present in the computer but it may happen that the registry looses this information and the program does not function properly. For checking these registry errors and repairing them some softwares are availlable which are very necessary to have in the computer.