On Sep 8, 2022, at 9:51 AM, Jon Steinhart
<jon(a)fourwinds.com> wrote:
One of those questions for which there is no search
engine incantation.
Whatever it is, it's really old. I found it used, not quite in the modern
sense, in "Hi-Speed Computing Devices", by ERA, 1950. It was used, in the
modern sense, in "Planning a Computer System", Buchholz,1962.
Noel