I would put it in the early sixties. In the mid seventies I made more than $13,000 just out of college doing digital interfacing and assembly programming to support the digital interface hardware designs.

This was on a DEC PDP8 mini computer. It was 12 bit, octal with 4k of core memory. Sounds like nothing now, but we did some impressive real time stuff with it.

__________________
2001 SLK 320 six speed manual
2014 Porsche Cayenne six speed manual

Annoy a Liberal, Read the Constitution