The site Hongkiat.com suggests us a time travel, from 1988 to today, through the evolution of the famous software created by Knoll brothers : Photoshop.
 
   
 
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20 years about history of Adobe Photoshop that you can discover via this link.  

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I first started to use Photoshop with version 7. I didn't do much with it at the time, but it is pretty interesting to see how it has changed.

Wow photoshop was installed on all our old macs in elementary school sad thing is we never used it..

Yes that's a great change and I like it very much..