Richard Owlett wrote: > I never used a pin board, but as a junior engineer I helped > create the wire lists to take input (an open/closed contact) from > 1000+ points in power plants and associated distribution system > for presentation in a control room on a Visual Annunciator. > > How the lamps lit was dependent on contact state, contact change > of state and current state of a large number of other contacts. > The lamps could be on, off, or flashing at a specified rate.
Sounds like one of those projects you'd find in the back of any number of various "hobby" publications for "make an authentic $thing for $purpose in your hobby". It's always amazing to hear and see how people created the logic circuits with discrete components, rather than microprocessors. > > I think that fits any reasonable definition of programming. The > overall system had an equivalent of macros -- implemented by > small cards with TTL chips whose fine detail of operation could > be programmed by selecting which jumpers were installed. > > Indeed it does. -- |_|O|_| Registered Linux user #585947 |_|_|O| Github: https://github.com/dpurgert |O|O|O| PGP: 05CA 9A50 3F2E 1335 4DC5 4AEE 8E11 DDF3 1279 A281