Chronology of Calculator and Computer Technology
1617 Napier’s Bones
1622 Slide Rule
1623 Calculating Clock
1645 Pascaline
1930 Differential Analyser
1946 ENIAC
1948 Transistors
1950 Turing Test
1951 UNIVAC I
1971 Hand Held Calculator
1977 Apple II
The History of Computing Project