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IBM ASCC-Mark I cams, counters, and relays

IBM ASCC-Mark I cams, counters, and relays

International Business Machines Corporation
1939-1944
IBM ASCC-Mark I card weight, paper guide, two multiprong relays

IBM ASCC-Mark I card weight, paper guide, two multiprong relays

International Business Machines Corporation
circa 1944
IBM ASCC-Mark I chain link

IBM ASCC-Mark I chain link

International Business Machines Corporation
circa 1944
IBM ASCC-Mark I computer framed photograph

IBM ASCC-Mark I computer framed photograph

Harvard Computation Laboratory
1945-1955
IBM ASCC-Mark I model 5 single coil

IBM ASCC-Mark I model 5 single coil

International Business Machines Corporation
circa 1944
IBM ASCC-Mark I photo album: a Mark I interpolator tape-feeding mechanism

IBM ASCC-Mark I photo album: a Mark I interpolator tape-feeding mechanism

International Business Machines Corporation
1944
IBM ASCC-Mark I photo album: Benjamin Durfee, IBM engineer

IBM ASCC-Mark I photo album: Benjamin Durfee, IBM engineer

International Business Machines Corporation
1944
IBM ASCC-Mark I photo album: bottom-leftmost panel of multiply-divide unit

IBM ASCC-Mark I photo album: bottom-leftmost panel of multiply-divide unit

International Business Machines Corporation
1944
IBM ASCC-Mark I photo album: bottom of Mark I multiply-divide unit

IBM ASCC-Mark I photo album: bottom of Mark I multiply-divide unit

International Business Machines Corporation
1944
IBM ASCC-Mark I photo album: bottom of Mark I multiply-divide unit

IBM ASCC-Mark I photo album: bottom of Mark I multiply-divide unit

International Business Machines Corporation
1944
IBM ASCC-Mark I photo album: close-up of dial racks for constant inputs

IBM ASCC-Mark I photo album: close-up of dial racks for constant inputs

International Business Machines Corporation
1944
IBM ASCC-Mark I photo album: close-up of Mark I component during installation

IBM ASCC-Mark I photo album: close-up of Mark I component during installation

International Business Machines Corporation
1944
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The Collection of Historical Scientific Instruments
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