A financial calculator or business calculator is an electronic calculator that performs financial functions commonly needed in business and commerce communities. It has standalone keys for many financial calculations and functions, making such calculations more direct than on standard calculators. It may be user programmable, allowing the user to add functions that the manufacturer has not provided by default.
Examples of financial calculators are the HP 12C, HP-10B and the TI BA II.
References
Financial calculator Wikipedia(Text) CC BY-SA