Michael A. Terrell wrote:

snip

The HP 85 desktop computer with the tape drive, tiny monochrome
monitor and IEEE-488 port was used at Microdyne for some very old
equipment for test and alignment, till they finally hired a programmer
to write new software for a PC.

One may be surprised at the current level of interest in HP85
hardware; many are still running well in their roles as experiment
controllers and with spares there is little impetus to replace
them.

Regards,

Michael