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3%mg2YOzRlm7468EnuBTrA_thumb_16bb7.jpg
Circuit board.
'Flip-Chip' and 'Control Board A1' marked on board along with the following groups of markings: '5009263E', '5409264', 'CS *' and the letter series of A-Z; and 'ATC2131580E'.

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.

QIkduyU2SC281ciC3EMevg_thumb_16a35.jpg
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.

qj5Juga8T0uEE3vZ3+wbGA_thumb_16bac.jpg
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.

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_16a32.jpg
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…

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.

UNADJUSTEDNONRAW_thumb_16a27.jpg
Circuit board with small handle.
'R202D' marked on board; 'R202' marked on handle.
'Digital Equipment Corporation Maynard Massachusetts' marked on insertion handle edge.

tFYZnn0qQHibJQ32ZofU4w_thumb_16a1e.jpg
Circuit board with small handle. ' NAND Gate R121A' and 'I 67' marked on board; 'R121' 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.

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…

jjynV1rkQDaPBV+FVXN9xQ_thumb_169f4.jpg
A sign used when displaying System Building Blocks for exposition.

IMG_9466.jpg
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.

IMG_9448.jpg
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.

nyvrmMVrTIyK7DEDqpNDnA_thumb_16bc2.jpg
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…

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.

UNADJUSTEDNONRAW_thumb_16bbf.jpg
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_16bba.jpg
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…

UNADJUSTEDNONRAW_thumb_16bbd.jpg
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.

2023.12e1.jpg
This is the processor for the PDP-8/e, a (relatively) low-cost minicomputer model that was introduced in 1970. (The PDP-8/e was sold with a tape drive, terminal, and cabinets that we do not have.)

The 12-bit CPU was built using DEC M-series Flip…