Re: Oh my God : blinkenlights !
Not as pretty as the EEC/ICL System 4/70**. A flat panel matrix of coloured squares backlit by an array of pea-bulbs. I have some 8mm film footage of one somewhere.
Some people would insist that the illuminated buttons of a KDF8 (RCA 501***) console in a darkened room was art in itself.
** an IBM 360 compatible based on the RCA Spectra 70/55 paper specification.
***The Spectra 7/45 microcode had an option to emulate an RCA 501 - and possibly also another early computer.