We use mechanical calculators so we can find out answers to division, multiplication, adding, and subtraction problem .
scientific calculators have scientific calculations such as scientific notation, but mechanical ones dont.
No, the very first mechanical calculators could only add and subtract. The first mechanical calculators were invented in 1623 by Wilhelm Schickard, followed by the Pascaline, invented in 1645 by Blaise Pascal. However, calculators that could multiply and divide were in use by the 19th century.
Mechanical calculators could perform basic arithmetic functions such as addition, subtraction, multiplication, and division. They could also perform more complex calculations such as square roots and logarithms depending on the model and design. Mechanical calculators were used before electronic calculators became prevalent.
No, and no.
No because now we have the new "Thing" Calculators! look it up in Wikipedia also!
simple calculators
Yes they do use calculators they have very large sums to work out sometimes! Yes they do use calculators they have very large sums to work out sometimes!
“Are there any online retirement or IRA calculators that are free for use?” are there any online retirement or IRA calculators that are free for use?
You can find loan calculators online that do all of the work for you. Bankrate.com has several different financial calculators to use. You simply plug in your numbers and it does the rest.
The Abacus
yes
It was one of the first mechanical calculators and performed addition and subtraction problems dealing with numbers up to 9,999,999