was a minicomputer
built with TTL74
technology and ferrite
memory. Computers were manufactured at the Artronix facility in suburban St. Louis, Missouri. An oral history transcript from Prof. Jerome Cox is at .
The instruction set architecture was very much like the Digital Equipment Corporation PDP-8
. It was an accumulator machine with 12-bit addresses to manipulate 12-bit data. Later versions included "origin registers" that were used to extend the addressability of memory.
For mass storage
it had a LINCtape dual unit (see LINC
). It also used a Tektronix
screen with tube memory and an ADC
to capture and display images.There was an optional plotter
to draw the results. To speed up the calculations it had a separate floating point unit
that interfaced like any other peripheral
It ran an operating system
with support for assembly language
and Fortran programming
and usually came with end user software for Radiation Treatment Planning (RTP), for use by a radiation therapist
or radiation oncologist
, and Hospital Patient Records. With extended hardware it became a multiuser system running MUMPS
.Latter additions included an 8" floppy disk
and hard disk of larger capacity.The PC12 initially controlled the Artronix
brain scanner (computed axial tomography), but this was for prototyping.The PC12 was also the core of an ultrasound system and a gamma camera system.
The PC12 was eventually superseded by the "Modulex" system built by......