For the information regarding the first four generations of computers I used:
http://en.wikipedia.org/wiki/History_of_computing_hardware_%281960s%E2%80%93present%29
http://www.webopedia.com/DidYouKnow/Hardware_Software/FiveGenerations.asp
For the information regarding the first four generations of computers I used:
http://en.wikipedia.org/wiki/History_of_computing_hardware_%281960s%E2%80%93present%29
http://www.webopedia.com/DidYouKnow/Hardware_Software/FiveGenerations.asp