السلام عليكم
PractiCalc © is the new generation
calculator and conversion tool for all Windows platforms. It provides you with the result of your calculations as you type them in - instantly. As you edit your equation, so the result is displayed. There is NO equal.
You can edit your equation any time. Your can save your equation as a named formula and use your formula immediately in any other equation.
رابط التحميل
http://www.4shared.com/file/119844091/aad8c93b/PractiCalc_Install.html
موقع البرنامج
http://www.practicalc.com/
بالتوفيق...