Thursday, May 17, 2012

Different between win XP and win 7

Most of the time this question has asked by interviewer. Many of the peoples are unable to answer it. So below article is helpful for those.

Windows XP was one of the successful operating system released by the Microsoft Company. Its features are more user friendly than previous operating system. There is a concept BSOD (Blue Screen of Death) in previous version of operating system. The Win XP brought up with rectification BSOD error.

Win 7 is successful operating system after win XP. Windows vista did not sell in market due to its drawbacks. Then win 7 version has released. It has implemented more graphical components and most attractive operating system now. Its GUI component is good and startup/shutdown is fast.

There is no necessity for the drivers to be installed in windows 7 but it requires in Windows XP

The Kernel of windows 7 is very good when compared to the Windows XP.

The windows defender in Windows 7 provides maximum security to the operating system but in Windows XP doesn’t have this future.

Outlook Express is removed from Windows 7 and replaced with Windows Mail.

The Documents and Settings folder has been replaced with Users folders.

Windows 7 is the first operating system from the software giant to natively support touch as a computer interface.

Below table shows you comparison between win XP and win 7.

Win XP has limited support from Microsoft, which has briefly explained in the below table.

Thursday, May 3, 2012


Now a day we are listening about High Definition TV at everywhere, but you people knows this technology? Let me give you the description of HDTV. It is the new technology television which gives you high resolution rate as compare to current NTSC and PAL video standards. HDTV is digital, but not all digital is HD TV. There are three formats of digital cable, standard, enhanced, and high definition. Standard has 480i, enhanced is 480p and high definition is 720p and 1080i resolution. High definition signal is transmitted in a 16:9 aspect ratio. It is also known as widescreen like screen in the movie theaters. You can buy HDTV with either standard (4:3) or wide screen aspect ratio. HDTV gives crystal clear surround sound, especially when HDTV set is connected to a Home Theater Audio System. Types of HDTV displays include direct view, plasma, rear screen, and front screen projection. HDTV requires an HDTV tuner to view and the most detailed HDTV format is 1080i.
The minimum performance attributes for HDTV:

  • Display Scanning Format have active vertical scanning lines of 720 progressive (720p), 1080 interlaced (1080i), or higher
  • It is capable of displaying a 16:9 image aspect Ratio. 
  • Receiver receives ATSC terrestrial digital transmissions and decodes all ATSC cable 3 video formats.
  • Audio receives and reproduces, and/or outputs Dolby Digital audio

Friday, April 27, 2012

Differences between LED and LCD display

There are mainly two types of displays are famous in people. One is LED and another LCD. LED stands for Light Emitting Diodes display and LCD is Liquid Crystal Display. Now a day’s peoples are confuse to decide which type of display is a good. That’s why I decided to publish the basic differences between LED and LCD displays.
LED TV is the newer modification of all current available displays.
Difference between LED and LCD display
-LED displays have better contrast ratio as compare to the LCD display.
-LCD display is unable to produce the dark areas of the images on the screen. Because of this, there is a loss of image quality. Whereas LED displays produces better black areas which in turn produces better contrast and clearer image.
-Color accuracy of LED display is very good than LCD.
-LED displays have much larger viewing angle as compare to LCD.
-LCD display beyond 30 degree angle from the center, the contrast ratio of the image start to diminish.
-LCD displays are available in the size range from 15inches to 65 inches whereas LED displays are available between 17inches and 70inches.
-Here in case of power consumption LED display consume more power than LCD display.
Above are the differences between LED and LCD display. Now it’s your choice which you selects both of one. It’s totally depending on your budget and requirement. LED is quite expensive the LCD display.

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