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2023.8e1.jpg
The keyboard was introduced in 1982 to be used with the VT 220 terminal.

EPSON023ee.jpg
A black and white photo of DEC Memory Tester 1516. The first systems Digital made were memory test systems to check the core stacks that were the memories used at that time. The technology used in these test systems were later used to build memories…

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Digital Equipment Corporation Library

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…

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.

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_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…

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.

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…

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.

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.

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A sign used when displaying System Building Blocks for exposition.

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…

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.

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_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.

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_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_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 …