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DEC: System Building Block - Flip Flop
System Building Block in enclosure
Flip-Flop 3201 marked on front
circuit board marked FF 3201-J Pat. Pend.
'Digital Equipment Corporation Maynard Massachusetts' marked on back.
Flip-Flop 3201 marked on front
circuit board marked FF 3201-J Pat. Pend.
'Digital Equipment Corporation Maynard Massachusetts' marked on back.
DEC: serial bus port module circuit board M7127
Large circuit board with 4 plastic insertion handles, one marked 'M7127'. 4 back plane connectors.
Edge of board marked with side designations (Side 1 and Side 2), with additional markings including: 'Serial Bus Port Module' and 'M7127', along…
Edge of board marked with side designations (Side 1 and Side 2), with additional markings including: 'Serial Bus Port Module' and 'M7127', along…
DEC: Power supply board, in original box
Power supply board, in original box; appears unused.
Box marked '9905439 Rev B 11/80'.
Board marked: '50007271-P2 Side 2'.
Very large capacitors and other components attached.
Box marked '9905439 Rev B 11/80'.
Board marked: '50007271-P2 Side 2'.
Very large capacitors and other components attached.
DEC: LPWR circuit board, modified as wall clock
Large circuit board modified to be a wall clock (cut out and modified with addition of a small quartz clock movement).
Board marked 'LPWR' and 'GS-2' and 'digital' logo, along with other various designations.
4 back plane connectors and two locking…
Board marked 'LPWR' and 'GS-2' and 'digital' logo, along with other various designations.
4 back plane connectors and two locking…
DEC: circuit board with prototype chips and EPROM extension
Circuit board with EPROM chip insertion extension at end.
Two chips center-marked with 'PROTO'.
End of board marked with '50-21531-01 A1' and 'OCt-10 94V-0' and '29591'.
extensive modification to circuitry has been performed in the form of added…
Two chips center-marked with 'PROTO'.
End of board marked with '50-21531-01 A1' and 'OCt-10 94V-0' and '29591'.
extensive modification to circuitry has been performed in the form of added…
DEC: circuit board with prototype chips
Circuit board.
Two chips center-marked with 'PROTO'.
End of board marked with '50-21531-01 A1' and 'OCT-10 94V-0' and '29591'.
Extensive dust covering back from use.
Two chips center-marked with 'PROTO'.
End of board marked with '50-21531-01 A1' and 'OCT-10 94V-0' and '29591'.
Extensive dust covering back from use.