If you've ever tried to figure out the sqaure root of 356 in your head and been rewarded with a pounding headache for your efforts, then you know how invaluable complicated math operations like logarithms, exponents, square roots, and more.
Styles
* Battery powered calculators are usually small and easily portable, so you can carry one in your purse and use it for balancing your checkbook while out shopping.
* Another popular style of calculator is the battery calculators are great for the environment since they don't require expensive batteries filled with chemicals.
* Desk calculators are very useful at the office and can be as essential as a computer and printer.
* Students in tough math subjects like trigonometry and calculus rely on dual power source so you're never left without power.
*programmed in for easy calculating.
