Using desktop calculator is a pain to use especially via mouse. Instead of using the standard Windows calculator, I download RPN-style calculators, those dreaded HP calculators without = (Equal) keys which I’m fond of since my college days, due to the ease in working out complex, long formulae. I’m fond of looking for simple but highly usable tools and I found one regular style calculator (with = keys) into my PCs. It’s easy to use especially via keyboard — the SpeedCrunch. It can create constants and variables - really cool. Try this out! It works in all platforms - Windows, Mac and Linux. Highly recommended!

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