PentaCalac is a calculator program the most powerful calculator program said by Headgate Studios. It features creating your own calculators and buttons. the calculator is compatible with windows 3.1, 95, 98, me, 2000, XP, Vista, 7, 8 and 10 it supports 16bit 32bit and 64bit. The starting price is $40.00 USD it is a download which means you don't have to wait for postage
Calculators included
10 key
scientific
business
bond calculator
Depreciation Calculator
time value cash flow
unit conversions
programming calculator
statistics calculator and
Windows Graphing Calculator