CALCULATOR
A scientific calculator.
it all depends on the calculator.
Buy a good calculator.
If you have a computer, you already have the calculator that is part of the computer's program.
Nezarr the Calculator was created in 1977.
OK Calculator was created in 2002.
Curta calculator was created in 1948.
Calculator - comics - was created in 1976.
Graphing calculator was created in 1985.
Expensive Desk Calculator was created in 196#.
Practical Astronomy with your Calculator was created in 1979.
Cloudy Cloud Calculator was created on 1997-12-10.
mr.caculator
French Blaise Pascal
To be more of a convenience for people.
programaticly