From mboxrd@z Thu Jan 1 00:00:00 1970 From: ats at offog.org (Adam Sampson) Date: Fri, 20 Dec 2019 13:30:17 +0000 Subject: [COFF] [TUHS] AP-3 minicomputer In-Reply-To: (Dan Cross's message of "Fri, 20 Dec 2019 03:49:49 -0500") References: <0FCF3C9F0F6C2441BC6C13C6E49BAEF101DC35B21D@EX-MB1.hq.computerhistory.org> <4C8A6FE1-3A6E-4F28-AABE-793AABD3F4C4@mcjones.org> Message-ID: Dan Cross writes: > https://www.cia.gov/library/readingroom/document/cia-rdp78b04770a000100110018-1 > However, details of the sending party have been redacted, and there is > nothing pointing to the identity of the manufacturer. The 1704689 flip-flop PCB is a Bendix part: https://www.ebay.com/itm/263975518840 This page has a picture of a "Nistri-Bendix AP/3 analytical stereoplotter (a special purpose instrument primarily used to compile contour maps and terrain profiles)", which sounds like the kind of thing the Air Force would have: https://www.cia.gov/library/center-for-the-study-of-intelligence/kent-csi/vol15no1/images/index.html There's more information online about the AP/1, AP/2 etc., which consist of a digital computer driving some specalised plotting hardware -- so it sounds like the letter's talking about spares for the computer part of the AP/3. Whether that's the same as the AP-3 you're after, though... -- Adam Sampson