Alto II Tape Controller I circuit board
Xerox PARC (Palo Alto Research Center)
||Hand painted in white on component side
||Etched on wiring side
||Labeled as "PWB NO." This number is silk screened on component side
||Ink stamped on wiring side.
||Labeled as "ASSY NO." The "B" is ink stamped and the rest of the number is silk screened.
overall: 1/2 in x 10 1/2 in x 7 3/8 in
There are hand engineering changes on wiring side. There is a paper label over five ICs that reads "Rcvd from PARC 7/20/81".