My name is Charles Shaffer. I am a retired Mechanical Engineer/Designer of machined products. Currently trying to teach myself to program Android 3 & 4 for tablets. I am a relative newbie to Android, however I first leaned to write/debug programs in basic in 1976. I have also extensive experiance programing for machine tools. I also have extensive experiance in CAD & CAM programs including Solid Modeling in Solid Works.