Ken ShirriffIn 1967, IBM introduced the System/4 Pi line of aerospace computers, packing mainframe performance into a compact box. 4 Pi computers powered everything from military aircraft to the Space Shuttle to sonar systems on submarines. Thread...
Eric Likness@kenshirriff My dad worked for IBM and used to move these series/family devices around the country to deliver off to USAF bases for use on B-52s back inna day. 👍 He told me they were shoebox sized (very roughly) and called it an "airborne computer"
@kenshirriff And, at least for the ones he was responsible for, cost ~$50,000 USD again, back inna day.