1.)  What was Photoshop based off of in traditional photography?

2.)  Who were the two people that combined knowledge to create Photoshop? John Knoll

3.)  What year was Photoshop 1.0 released? 1990

4.)  What feature was added to Photoshop 2.0? Path Feature

5.)  When was the layers feature introduced and what are layers? 1994 Phtoshp 3.0. Layers are a lifesaver for any margibally complex design.

6.)  When did the unification in the Photoshop interface happen? 1996 Phtoshop 4.0

7.)  When did the lasso selection tool and the history feature appear? 1998 hotoshop 5.0