Retired (2017) Electronic Design Engineer, primarily FPGA design with VHDL since 1992.

Started work at GEC McMichael in '77, which became Marconi Underwater Systems, until Jan '91 when everyone made redundant.

Started at British Aerospace (Dynamics), Stevenage, in Jan '91, which eventually became MBDA.

I "Dabbled" in Tcl/Tk when working, but have come back to it after 5+ years to design a cycling based app for Windows (& Mac if I can get it working). By no means that knowledgable of Tcl.