the LIFELINE of Technology Industry

In early days, when computers were invented and only DOS were used as the operating system no one have to tackle with so many file format extension, now days we have to do like several audio and video , image file formats, cad drawings, web formats and vector file formats.

Working with Vector file

Working with Raster file

To describe what are Vector and Raster file format, suppose we have two pieces of paper, one with filled with a color red and another have a picture on it. Now let we magnify both pages using any magnifier we can easily find that Photograph image quality decreases as we further move the lens while the red color filled paper shows the single red color from any depth. Here we can describe, for instance the photograph as a Raster Image and Red filled paper as Vector Image. In technical terms, as we know our computer generally displays 72 pixels per inch which is described as ppi and our printer works on dpi which dots per inch. Both are different term which are used to describe how the grid was laid when we get the final layout. For vector based drawing the programs like freehand, adobe illustrator or Corel draw uses a mathematical formula, they set the object dimension or shape which makes an image with their coordinates and assigns the colour that will be the same no matter at to what extent we zoom it. While in raster images Programs Like adobe Photoshop or Photopaint they define the image dimension or their resolution first. This is why working with the photographs we have to work with correct resolution and with vector images there is no such boundation as we can increase or decrease its size without any quality loose this why text matter printed with vector based softwares are very sharp and fine while with raster image every time we resize or changes it quality suffers, when increasing the size to 200% the resolution drops to 36 dpi and it is really jagged.

Vector based images do have several advantages since they are describe mathematically and are resolution independent. But they do have one major disadvantage. Most photographs can’ t be described mathematically. To achieve a continuous tone image for example a photograph the most efficient way to describe it is by using a raster image format because these are much easier for color correction.

Common uses for raster image formats

1. Photographs or scenery images that were scanned or captured from the camera.
2. Images that have several millions of colors.
3. Used on the web where there are no vector formats currently supported

Common uses for vector image formats

1. Logos which are generally a few solid colors and need to be shown at a variety of sizes
2. Creating specialized text effects
3. 3D and CAD programs

Vector image formats advantages

1. Resolution independent
2. Smooth curves
3. Small file sizes

Raster image formats advantages

1. Only format that will show smooth gradients and subtle detail necessary in photographic images
2. Allow for color correction much easier then vector images

Both file formats are used incorrectly used by many people. Lots of people use Photoshop for doing work which would be much better suited for a drawing program. You can use the wrong file format but it is much more efficient to understand the differences between the two and use the correct one.

As in the previous articles i have explained about System Restore and How to Restore your system and now it’s turn to tell you how to create a Restore Point and undo the last restoration. first thing i make it clear to that there is doesn’t any need to create restore point manually because windows is itself very smart and whenever any critical changes occurs to your computer it automatically creates the restore points. But in case if you want to this manually U can proceed……….

As i assume you have read the previous articles and are well known where to find system restore I proceed from Option two i.e. Create a restore point. and click next…

Here the next window you will get ask you to enter the description  about your restore points about its date, reason and any other information just for your reference just to remember it why and when it was created. And click create…  Your Manual Creation of Restore Point Created, You can use it whenever you want use it.

And How to undo the last restoration is also very simple just choose the third option and click next. You will be prompted with  a list of system restored dates if any… i.e. if you already use system restore earlier any time unless their will not be any option available to you and you can use the third option.

For more information on these read articles listed below

System Crashed - Restore it to an earlier date

How to restore PC to an earlier date using System Restore….