Here is the new calculator that can add and subtract.

Can you figure out how to make it multiply ?

Here are the steps in building the calculator from the first session.

Theses are the files that were on the diskettes everyone tool home the first week.

The steps in building the calculator are:

Step 1 : How to make a text box to show the results of operations.

Step 2 : How to make a button to tell the calculator to do something.

Step 3 : How to write a function, to define something you want the calculator to do.

This page, is just taking the lessons in steps 1 to 3, and continuing to add more buttons and functions, until you have taught the program to do what you want it to do.