Square+Numbers+V2

Specification: Square Numbers V2
Write a program which displays the squares of the numbers 1-20 e.g.

1 x 1 = 1 2 x 2 = 4 3 x 3 = 9

20 x 20 = 400

The Task
1. Draw an Input-Process-Output diagram 2. Draw a screen design, with labelled fields and buttons 3. Produce a pseudocode design 4. Write the program