29-03-2014, 10:15 PM
I would go for early 1970s as the transistors are silicon NPN with only paint spots to indicate what type they are and all the VBEs are 0.6 volts except the output pair that are germanium PNP.
Certainly the oldest internet we have found so far. I wonder if there is anything internet that is older.
Certainly the oldest internet we have found so far. I wonder if there is anything internet that is older.







