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DEC: System Building Block
model number 4509 stamped on front
level standardizer 1502A written on circuit board end
serial number 0137536 stamped on side
level standardizer 1502A written on circuit board end
serial number 0137536 stamped on side
DEC: System Building Block mounting backplane and enclosure
large aluminum (painted) rectangular mounting box for System Building Blocks. Painted speckled tan/brown. 'DEC Building Blocks' marked on back along with 'Digital Equipment Corporation' and 'Maynard Massachusetts' (no other nomenclature).
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: System Building Block - Flip Flop
System Building Block in enclosure
Flip-Flop 3201 marked on front; number stamped '13006' front top.
circuit board marked FF 3201-E 00644
'Digital Equipment Corporation Maynard Massachusetts' marked on back.
Flip-Flop 3201 marked on front; number stamped '13006' front top.
circuit board marked FF 3201-E 00644
'Digital Equipment Corporation Maynard Massachusetts' marked on back.
DEC: System Building Block - Inverter
System Building Block in enclosure
Inverter 3101 marked on front; number stamped '21236' front top.
'Digital Equipment Corporation Maynard Massachusetts' marked on back.
Inverter 3101 marked on front; number stamped '21236' front top.
'Digital Equipment Corporation Maynard Massachusetts' marked on back.
DEC: System Building Block - Flip Flop
System Building Block in enclosure. Flip-Flop 3201 marked on front; number stamped '15863' front top, label applied to front marked 'C'.
'Digital Equipment Corporation Maynard Massachusetts' marked on back.
'Digital Equipment Corporation Maynard Massachusetts' marked on back.
DEC: System Building Block - Pulse Generator
System Building Block in enclosure. Pulse Generator 3410 marked on front; number stamped '18418' front top.
'Digital Equipment Corporation Maynard Massachusetts' marked on back.
'Digital Equipment Corporation Maynard Massachusetts' marked on back.
DEC: System Building Block - backplane
Bare backplane for connection of System Building Blocks including power connectors. Label applied to back reads '901 Model 2/26/61'. Sticker applied to front reads 'O.K. Inspected by (DLC in pen) Date: (9/12/61 in pen) Digital Equipment…
DEC: Flip Chip - Inverter R107
Circuit board with small handle.
'Inverter R107C' and '7 - 66' marked on board; 'R107' marked on handle.
'Digital Equipment Corporation Maynard Massachusetts' marked on insertion handle edge.
'Inverter R107C' and '7 - 66' marked on board; 'R107' marked on handle.
'Digital Equipment Corporation Maynard Massachusetts' marked on insertion handle edge.
DEC: Flip Chip - R202
Circuit board with small handle.
'R202D' marked on board; 'R202' marked on handle.
'Digital Equipment Corporation Maynard Massachusetts' marked on insertion handle edge.
'R202D' marked on board; 'R202' marked on handle.
'Digital Equipment Corporation Maynard Massachusetts' marked on insertion handle edge.
DEC: Flip-Chip prototype - XOR Gates M121A
circuit substrate board with markings but no electronics; with small handle.
'XOR Gates M121A' marked on board; 'DEC Flip Chip' marked on obverse.
'Digital Equipment Corporation Maynard Massachusetts' marked on insertion handle edge.
'XOR Gates M121A' marked on board; 'DEC Flip Chip' marked on obverse.
'Digital Equipment Corporation Maynard Massachusetts' marked on insertion handle edge.
DEC: Flip-Chip - Diode Gate Driver B685
Circuit board with small handle. ' Diode Gate Driver B685B' marked on board; 'B685' marked on handle.
Printed paper tag attached denotes 'PDP-10 Defective Module'. Writing in pen notes 'Wesleyan 3-20-76'
'Digital Equipment Corporation…
Printed paper tag attached denotes 'PDP-10 Defective Module'. Writing in pen notes 'Wesleyan 3-20-76'
'Digital Equipment Corporation…
DEC: Flip-Chip - Inverter B104
Circuit board with small handle. ' Inverter B104C' and '5-68' marked on board; 'B104' marked on handle.
'Digital Equipment Corporation Maynard Massachusetts' marked on insertion handle edge.
'Digital Equipment Corporation Maynard Massachusetts' marked on insertion handle edge.
DEC: Flip-Chip - Clamped Loads W005
Circuit board with small handle.
'FLIP CHIP', 'Clamped Loads W005' and '12-67' marked on board; 'W005' marked on handle.
'Digital Equipment Corporation Maynard Massachusetts' marked on insertion handle edge.
'FLIP CHIP', 'Clamped Loads W005' and '12-67' marked on board; 'W005' marked on handle.
'Digital Equipment Corporation Maynard Massachusetts' marked on insertion handle edge.
DEC: Flip-Chip - EIA to TTY Converter W671
Circuit board with small handle.
'EIA to TTY Converter W671B' marked on board; 'W671' marked on handle.
'727A' stamped and 'digital' marked on one side of, and 'Digital Equipment Corporation Maynard Massachusetts' marked on other side of …
'EIA to TTY Converter W671B' marked on board; 'W671' marked on handle.
'727A' stamped and 'digital' marked on one side of, and 'Digital Equipment Corporation Maynard Massachusetts' marked on other side of …
DEC: Flip-Chip in original paperboard box - Solenoid Drivers M044
Circuit board with small handle.
'Solenoid Drivers ', 'M044B' and '5008563' marked on board; 'M044' marked on handle.
'digital' marked on insertion handle edge.
Box printed with 'digital decproducts module', marker writing '6/1' and '1'…
'Solenoid Drivers ', 'M044B' and '5008563' marked on board; 'M044' marked on handle.
'digital' marked on insertion handle edge.
Box printed with 'digital decproducts module', marker writing '6/1' and '1'…
DEC: Flip-Chip - Linc 8 Capacitor and Power Up G906
Circuit board with small handle.
'Linc 8 Capacitor and Power Up G906A' marked on board; 'G906' marked on handle.
'Digital Equipment Corporation Maynard Massachusetts' marked on side of insertion handle edge.
'Linc 8 Capacitor and Power Up G906A' marked on board; 'G906' marked on handle.
'Digital Equipment Corporation Maynard Massachusetts' marked on side of insertion handle edge.
DEC: Flip-Chip - Input Amplifier MS120
Circuit board with small handle.
'Input Amplifier MS120 Exp 7-2-68' marked on board;
'Digital Equipment Corporation Maynard Massachusetts' marked on side of insertion handle edge.
'Input Amplifier MS120 Exp 7-2-68' marked on board;
'Digital Equipment Corporation Maynard Massachusetts' marked on side of insertion handle edge.
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…