Eniac

Eniac is a Pennsylvania historical marker in Philadelphia, Philadelphia County, dedicated 2000.

200 S 33rd St., S of Walnut St., Philadelphia

Get directions ↗Start a road trip Historical trails

ENIAC, the Electronic Numerical Integrator and Computer, was invented by J. Presper Eckert and John W. Mauchly. It was built here at the University of Pennsylvania in 1946. The invention of this first all-purpose digital computer signaled the birth of the Information 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)
1943 · Philadelphia, Pennsylvania (USGS Historical Topographic Map Collection)
1944 · 1944 Philadelphia Transportation Company street car, bus and subway-elevated lines route… (Historical map archives, georeferenced via Allmaps)
1949 · Philadelphia, Pennsylvania (USGS Historical Topographic Map Collection)

Philadelphia, Pennsylvania, 1949, covering the location of Eniac, with a pin at the marker's coordinates — Philadelphia, Pennsylvania, 1949, covering this location. USGS Historical Topographic Map Collection. The pin is ours, placed from the marker's coordinates.

Example

For example, one family's tree showed the Articles of Confederation marker in Pennsylvania standing under a mile from where William Gabby lived in the 1760s.

What that marker records spans 1777 to 1789, overlapping William Gabby's years there.

From one family's 77-marker roster

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The marker isn't at this spotOur pin may be off. If you know where it stands, tell us.I couldn't find the markerWe record what the source recorded. We have not been to look.The sign reads differentlyThat would be an error, and we can pass it to the program.The historical map looks wrongThe period map behind the pin, not the marker itself.Something else

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

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