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  • Tags: early Digital hardware

uz187EmGRqyXRrP4Xa4+aA_thumb_16be9.jpg
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.

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Large circuit board
Board marked 'LPWR' and 'Diceon' and '94-0',
'M7135' and '5015381-01-C1' along with other various designations.
4 back plane connectors and two metal locking insertion handles.

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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…

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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…

UNADJUSTEDNONRAW_thumb_16bdf.jpg
Large circuit board with additional board attached (screws removed, hinge attached).
Has 6 back plane connectors, two locking insertion handles, and 4 ribbon cable connectors.
Board marked 'Side 2 32K Stack Board' and '5011643B' and…

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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.

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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…

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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.

vmnQoDgaReOXhuSoOKsq4A_thumb_16baa.jpg
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.

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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'…

UNADJUSTEDNONRAW_thumb_16a3e.jpg
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 …

UNADJUSTEDNONRAW_thumb_16a39.jpg
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.

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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.

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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…

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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.

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Circuit board with small handle.
'R202D' marked on board; 'R202' marked on handle.
'Digital Equipment Corporation Maynard Massachusetts' marked on insertion handle edge.

UNADJUSTEDNONRAW_thumb_16a23.jpg
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.

IMG_9469.jpg
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…

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System Building Block in enclosure. Pulse Generator 3410 marked on front; number stamped '18418' front top.

'Digital Equipment Corporation Maynard Massachusetts' marked on back.

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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.