Allegheny West in Philadelphia in Philadelphia County, Pennsylvania — The American Northeast (Mid-Atlantic)

Commercial Digital Computer Birthplace

Photographed By Bill Coughlin, March 14, 2011

1. Commercial Digital Computer Birthplace Marker

Inscription. 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.

Erected 2006 by Pennsylvania Historical and Museum Commission.

Topics and series. This historical marker is listed in this topic list: Industry & Commerce. In addition, it is included in the Pennsylvania Historical and Museum Commission series list. A significant historical month for this entry is March 1910.

Location. 40° 0.131′ N, 75° 11.217′ W. Marker is in Philadelphia, Pennsylvania, in Philadelphia County. It is in Allegheny West. Marker is on Ridge Avenue, on the right when traveling north. Marker is on Ridge Avenue, between W Hunting Park Avenue and W Indiana Avenue. Touch for map. Marker is at or near this postal address: 3747 Ridge Ave, Philadelphia PA 19132, United States of America. Touch for directions.

Other nearby markers. At least 8 other markers are within walking distance of this marker. Rear Admiral John Adolphus Bernard Dahlgren (about 700 feet away, measured in a direct line); Laurel Hill Cemetery (about 700 feet away); a different

Paid Advertisement

Click on the ad for more information.
Please report objectionable advertising to the Editor.

Click or scan to see
this page online

marker also named Laurel Hill Cemetery (about 700 feet away); a different marker also named Laurel Hill Cemetery (about 700 feet away); a different marker also named Laurel Hill Cemetery (about 700 feet away); Gatehouse (about 700 feet away); a different marker also named Laurel Hill Cemetery (about 800 feet away); a different marker also named Laurel Hill Cemetery (about 800 feet away). Touch for a list and map of all markers in Philadelphia.

Also see . . .
1. Dedication Video ::. (Submitted on June 10, 2011.)
2. Commercial Digital Computer Birthplace - Behind the Marker. ExplorePAHistory.com (Submitted on July 21, 2011, by Mike Wintermantel of Pittsburgh, Pennsylvania.)

Marker at 3747 Ridge Ave. image. Click for full size.

Photographed By Bill Coughlin, March 14, 2011

2. Marker at 3747 Ridge Ave.

Credits. This page was last revised on February 2, 2023. It was originally submitted on March 14, 2011, by Bill Coughlin of Woodland Park, New Jersey. This page has been viewed 1,308 times since then and 68 times this year. Photos: 1, 2. submitted on March 14, 2011, by Bill Coughlin of Woodland Park, New Jersey.