The SAGE computers were the largest ever built, and I worked on one at
the very end of its service life. Here are some bits and pieces from
the AN/FSQ-7 (SAGE) computer.
I learned FORTRAN on an IBM 360 mainframe, using 029 keypunches
to type up my code. I currently have a functioning
129 Card Data Recorder and a
029 keypunch undergoing
restoration.
Test and bench equipment used to keep the old hardware running.
IBM pluggable unit, as used in the model 604 Electronic Calculating
Punch. This module is based on a 5844 twin triode tube, which is a
computer rated version of the 6J6. This particular module is wired
as a dual inverter (IN-13). The CE Manual
for the 604 is on Bitsavers.