retired electrician.
served electrical apprenticeship with Canadian national railways in early 70's.
Worked on gp7's gp9's, sd40's, sw1200/1500's,gp38's.
also C&O gp9's which were leased when we had a motive-
power shortage around 1974.
Also worked on many alco locomotives.
Computers,Trainz simulator for sure!!!!!!!!!!,diesel-electric locomtives and railroad signalling