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.
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More markers in Philadelphia
Betsy Ross (1752-1836)
Philadelphia, PA
Credited with making the first stars and stripes flag, Ross was a successful upholsterer.
Christ Church
Philadelphia, PA
Founded, 1695. Erection of present building begun in 1727.
Philadelphia Sketch Club
Philadelphia, PA
America's oldest artists club was founded in 1860 to improve illustration skills.
The Salvation Army
Philadelphia, PA
The first U.S. corps was opened here on Oxford St. by 17-year-old Eliza Shirley in 1879.
The Woodlands
Philadelphia, PA
Here, William Hamilton (1745-1813) created one of the finest landscape gardens of its day and introduced many exotic plants.
