A. 1543
B. 1642
C. 1858
D. 1972
Submitted by: Ali Mallah
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Blaise Pascal invented a mechanical calculator with a sophisticated carry mechanism in 1642.
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A. 1543
B. 1642
C. 1858
D. 1972
Submitted by: Ali Mallah
Blaise Pascal invented a mechanical calculator with a sophisticated carry mechanism in 1642.
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