Courtesy of Bill Eaton, who was in the computer scrap business in the 70s and bought the Bell Labs GE-645 about 1972.

Circuit board from Bell Labs GE-645

These are not the two-foot-square boards filled with integrated circuits used in the 6180, they're much smaller. The 645 boards are two-layer, about 4x5 inches, and contain individual transistors, resistors, diodes, and capacitors.

04 July 2000