Now we have so many of them. Different brands with loads of features and it can make engineer's life easy. As everything else is going online, so does scientific calculators. eCalc.com is one of those cool scientific calculators available online. It does all the work for you over the internet.
Whether you need unit conversion, equation solution, decimal fractions, RPN or Algebra, eCalc has it all. And the best part is, its totally free.
What I liked about eCalc is the user friendly interface. Nice colored buttons, text boxes and you won't believe that the whole calculator is made up of CSS and HTML. So you don't need any flash player or applet viewer. Its simple HTML/CSS.
I found few more Scientific Calculators that are available online but are not as cool as eCalc. One of them is available at Calculator.com and another one is here
So now you don't need Scientific calculator for your complex calcuations but you need a browser and an internet connection.
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