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Leibniz developed this system to express numbers and all operations of arithmetic—addition, subtraction, multiplication, and division—in the binary language of 1s and 0s.
His latest installment is an article describing the strange implementation of the IBM 1401’s qui-binary arithmetic.
For example, given the ubiquity of computers in modern life, it’s useful for today’s students to learn to do binary arithmetic – adding and subtracting numbers in base 2 just as a computer does.
This is simple binary arithmetic. What happens when 10111 (+seven) and 11010 (+ten) are added together. The answer, obviously is seventeen. How is this represented in the five bit number format?
It seems that inhabitants of Mangareva island in French Polynesia created their own particular hybrid of decimal and binary number systems to do mental arithmetic.
Unlike a digital computer, the brain does not use binary logic or binary addressable memory, and it does not perform binary arithmetic.
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