The object is a metal panel with a phenolic board mounted underneath. There are sockets for nine octal vacuum tubes, all are populated, and there is one hole in the board with no socket. There are 14 BNC connectors around the edges, and one 29-pin connector on the left side. A screen-printed label in the center of the top, and on the lower-right of the underside reads, "102 PROGRAM COUNTER SERIAL # 11". There is a bracket on the underside with two white indicator lights.
Date
1951
Manufacturer
Massachusetts Institute of Technology (MIT)
Identifying Numbers
Model number
102
Printed in white paint on both the top center of the panel and the lower right corner of the underside.
Other number
A10-3
Handwritten on a white paper label at the lower right corner of the underside.
Serial number
11
Printed in white paint on both the top center of the panel and the lower right corner of the underside.
