Concentration 6!

The Transition from Typewriters to Computers. 

Please note that these are the years that the actual invention was established.  (Electronic Typewriter/Personal Computer)  I overheard someone when I saw my work at the art show for a bit and they were saying that the years that were shown were not correct and that the years for the things I was showing were not correct.  I would like to just reiterate the fact that I am doing the years of when the invention was publicly known and or became a household item.  I am fully aware of the fact that the iMac did not come out in 1977, and that it is just to explain the transition.