The Transistor
 mid 1940s - mid 1960s
John Bardeen, William Shockley, and Walter Brittain: The First Transistor (1946)
IBM: The IBM 7090 (used by US Air Force for early warning system) (1959)
Sperry-Rand: The UNIVAC III (1962)
IBM: System/360 (five different models) (1964)
1947: Chuck Yeager broke sound barrier.
1950: Korean War.
1963: John F. Kennedy assassinated. 
 
Inventors, courtesy of http://www.lucent.com/minds/transistor/history.html
UNIVAC, courtesy of http://www.fourmilab.ch/documents/univac/case1107.html
Tim Youngman