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What is 1901 minus 1839?
1901 minus 1839 1901
How many years are between 1901 and 2008?
There are 107 years . 2008-1901 = 107 (:
How old are you if you were born in 1901?
Around 107 years old depending on the month you were born.
What comes after 190?
200
How have calculators changed over time?
Calculators have changed drastically the first calculator was an abacus. The Arithmometer (1820) was for add, subtract, multiply, and divide. The Odhner (1875) was made by Odhner who invented a pinwheel calculator which used a hand crank to complete the computation. The Comptometer (1885) was made by Felt, he invented the first calculator using keys to push for number entry and calculations. The Standard calculator (1901) was made by Hopkins who used two rows of five buttons representing the digits 0 through 9 to perform math computations. The standard ten digit keyboard (1911) we use today was made by Sundstrand who brought the design from Sweden to the United States. The first commercial calculators (1914) began entering businesses and the use of calculators began to be popular. We have been modifying calculators a little at a time since then.
