UNIVAC 9x00 Peripheral Card 1971
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UNIVAC 9x00 Peripheral Card 1971 |
by Bill Degnan - 04/02/2026 23:46 |
 The front view of a 1971 UNIVAC 9300 or 9400 controller card. The words "UNIVAC" are not printed on the card, and it has been difficult to specify where this card came from. The date stamp on the 74 series ICs found on the front of the board are 1971. Click image for larger view.
 Here is the rear view of the same card. Twin 18-pin bus connectors. Click image for larger view.
The UNIVAC 9000 series was produced to serve as an IBM 360-compatible. The first 9000's were sold in the mid 1960's. By 1971 the 9000 systems being sold by UNIVAC (9300 and 9400) were similar to the IBM 360/30. They used EBCDIC character encoding like IBM. Perhaps the card pictured here is a peripheral card, possibly a clone or peripheral controller, not actually part of the a 9x00 CPU, but this is just an educated guess. Herb Johnson writes: "... (See) https://americanhistory....ons/object/nmah_1367843 "UNIVAC 9400 Circuit Board from Tape Drive This circuit board from the UNISERVO VI-C tape drive is typical of those found in the control circuitry for the units." The "tell" seems to be the card sides number/letter scheme, the specific edge connector; the color (composition) of the PC board. In my opinion. There were a lot of custom one-off designs in early 1970's and earlier computing equipment. Lots of companies and shops in the USA to produce boards, design boards., for some customer like Univac. Or for some peripheral which Univac badged and sold. Regards Herb Johnson ..." Thank you Herb! The card indentified on the Smithsonian Natural Museum of American History website may actually be from an earlier UNIVAC 9000 model than the 9400, but it's clearly in the same 9000 family. The color and the spacing and number of pins in the edge connectors are a match, as Herb stated in his comments. The 9000 series was eventually replaced by the UNIVAC Series 90. Reply |
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