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Commercial Digital Computer Birthplace

Commercial Digital Computer Birthplace is a Pennsylvania historical marker in Philadelphia, Philadelphia County, dedicated 2006.

3747 Ridge Ave., Philadelphia

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BINAC, the world's first commercial, electronic, stored program, digital computer passed verification tests here, at 3747 Ridge Ave., on April 7, 1949. Customer acceptance of UNIVAC I, the world's first open market, commercial computer, followed on March 30, 1951. J. Presper Eckert and John W. Mauchly, co-inventors of ENIAC, led the development of both of these pioneering machines, which launched the commercial computer age.

TodayHistorical map

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Historical map archives, georeferenced via Allmaps

Historical maps covering this location

1901 · Philadelphia (David Rumsey Map Collection, Stanford Libraries)
1902 · Philadelphia and vicinity, Pennsylvania, New Jersey and Delaware / Henry Gannett, chief… (University Library, Vrije Universiteit Amsterdam)
1929 · Map of Philadelphia and Camden (Historical map archives, georeferenced via Allmaps)
1944 · 1944 Philadelphia Transportation Company street car, bus and subway-elevated lines route… (Historical map archives, georeferenced via Allmaps)
1979 · Important farmlands, Philadelphia County, Pennsylvania (Penn State University Libraries)

Philadelphia, 1901, covering the location of Commercial Digital Computer Birthplace, with a pin at the marker's coordinates — Philadelphia, 1901, covering this location. David Rumsey Map Collection, Stanford Libraries. The pin is ours, placed from the marker's coordinates.

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Marker data: Pennsylvania Historical and Museum Commission via data.pa.gov

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