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| Early Calculating Machines: Charles Babbage |
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| mid 1800's |
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| Charles
Babbage:The Difference Engine #1 (1832) Charles Babbage: The Difference Engine #2 (1852) The Analytical Engine (dev. by son in 1910) |
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| 1835-36:
Texas Revolution fought to win the independence of Texas from Mexico. 1845: The potato blight strikes Ireland. 1854: Commodore Matthew Parry negotiates a treaty opening Japan to American trade. 1869: The first transcontinental railroad is completed in America. |
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| Chia-Ling Ma |
