I have programmed this calculate that resembles a typical calculator that consists of the number buttons, the operator buttons and some additional buttons such as the memory button and the clear button. I have tested it and it performs just as good as the Microsoft Windows's calculator.To design the interface, you need to insert 25 command buttons, and one label that functions as the display panel. The number buttons from 1 to 9 are grouped together as a control array and named as ButtonNum while 0 is a standalone command and named as Bzero. The four basic operators are also grouped together as a control array and named as Operator. Other buttons are named appropriately according to their functions. The label is named as panel
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