My Name is Marvin and I have been a Machinist for over 39 years. I love learning new things and finding quicker and better ways to solve problems. I enjoy working on Computers and Calculators. I can't carry my TI-84 calculators around with me everywhere, but I can my iPhone. I downloaded the GrafNCalc83 app and guess what? You can program it just like the TI-84! I would also like to think Mr. Brock and Tony Norton for all of the help! Contact Me if you have any questions. Thanks for visiting my site!