I entered in the fantastic world of programming when I was 9 years old. My father give me a Casio graphical/programmable calculator as a present. It was exactly a FX-7400 G. Quick Specifications: Maximum of 26 variables (alphabet letters) 13-character x 6-line display 7 Kbytes of memory If you ask me what is the first program that I have created the right answer is that I simply copied the first example in the manual. This...