Original early-1970s wire-wrap prototype / logic card.

The board uses dual stacked gold-plated card-edge connectors on one side and white plastic extractor handles on the other. It is fully populated with Texas Instruments 74-series TTL ICs in sockets and extensively wired on the wrap side with white Kynar-style wire.

Visible chips include:

• SN7400 / SN74S00 (NAND)

• SN74139 (decoder)

• SN74150 (16-to-1 multiplexer)

• SN74173 / SN74273 (registers)

• SN74175

• SN7432

• SN74S86 (XOR)

• and others

Date codes on several devices are in the 70xx / 71xx range (circa 1970–1971).

This is a typical Vector / Augat-style or custom industrial proto card from the TTL era. It would have been used in a minicomputer, instrument, or laboratory system. Great display piece, parts donor, or starting point for a vintage computing or wire-wrap project.

What you get:

• The exact board shown in the photos

• All chips and sockets currently installed

• Existing wire-wrap interconnections

Notes:

• Sold as-is, untested. I do not have the original system this plugged into.

• Gold is on the edge fingers only.

• Please zoom the photos — what you see is what you get.

• Ships well-packed in a rigid box.

Questions welcome. Thanks for looking.