The object is a metal panel bearing sockets for 12 octal tubes (2 populated, 10 vacant) and 21 BNC connectors. A screen printed label in upper left, and on rear circuit board reads, "303 B REGISTER DIGITS 0-15 SERIAL # 8". Partially, obscured red label is "403 in out register". A label on the back reads "842 PARITY REGISTER SERIAL #18".
Date
1951
Manufacturer
Massachusetts Institute of Technology (MIT)
Identifying Numbers
Model number
303
Printed in white in the top left corner of the unit.
Other number
F5-5
Handwritten on a white sticker on the underside of the unit.
Serial number
18
Printed in white in the top left corner of the unit.
