I'm a dinosaur. I learned to program senior year in High School in 1970. In college I learned Fortran, COBOL, PL/I and Assembler (IBM mainframe). In the real world I have used mostly Assembler, some COBOL, lots of REXX and a little C. After being laid off in 2012, I went back to school and took classes in VB.NET, C++, SQL, UNIX scripting, Java and PHP. I have experience with the following operating systems: Coding and using - IBM (VSE, VM and z/OS). Using - small machines (CP/M, DOS, OS/2, Windows, Apple and Mac (pre-Unix and Unix) and Unix. I'm now learning Python and Tkinter just for fun.