Images(3)

Board, Circuit

Object number2016.96.9

Manufacturer Westinghouse Electric Corporation

Manufacturer C. P. Clare and Company

MediumMetal; Plastic; Paper; Ink; Adhesive

Credit LineGift of James Sutherland

DescriptionRectangular computer circuit board.DimensionsLength x Width x Depth: 10.25 × 6.25 × 0.625 in. (26 × 15.9 × 1.6 cm)
MarksMost of the components have text printed on them.

The gold metal components each have a paper label with printed text "MERCURY WETTED CONTACT RELAY / HGSM 1142 UP / C.P. CLARE & CO. ASSEMBLED IN MEXICO".

Top side has printed black text in the top left corner "[Westinghouse logo] / 2837A30 / 1XCO3".

Top side has two rounded rectangular white paper stickers in the top left area, each with printed text on it, left sticker "T5171" and right sticker "G01 SUB5".

Underside has raised silver text in the top right corner "2837A30 / 1XCO".
Historical NotesP250 digital output with relays. Part of a collection of materials that document the early development of computer technology at Westinghouse where donor James Sutherland was an engineer. Sutherland was a design engineer for computers at Westinghouse in the 1960s. He earned a degree in electrical engineering, served in the United States Air Force, and then began to work for Westinghouse in 1959. He worked in the logic group and designed the Control and Indexing Units for the Westinghouse PRODAC-IV (Programmed Digital Automatic Controller). The computer used NOR logic elements, developed by Westinghouse’s Buffalo plant, to run. With permission Jim took parts of these computers home and eventually built a home computer called ECHO IV (Electronic Home Computing Operator), it is now in The Computer Museum in Boston. ECHO IV was recognized as the first home computer by the Annals of Computing History and The Computer Museum in Boston.

Previous owner James F. Sutherland

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