alt Hacker NewsKen Shirrif recently published a survey of the "system/4 pi" family of which this is a member:
https://www.righto.com/2026/03/ibm-4-pi-computer-history.htm...
Ken Shirrif recently published a survey of the "system/4 pi" family of which this is a member:
https://www.righto.com/2026/03/ibm-4-pi-computer-history.htm...
I'm here if anyone has questions on the AP-101 computers or the 4 Pi family...