Object Name: model of tape rack for IBM ASCC-Mark I
Inventory Number: 1997-1-0240
Dimensions: frame: 12.1 x 11.8 x 10.5 cm (4 3/4 x 4 5/8 x 4 1/8 in.)
Description: Object consists of a metal frame forming a cube. Four metal bars extend across both the top and bottom planes of the cube, each bar bearing four metal knobs. Strips of tape run from the top to the bottom of the cube, threaded around the knobs. There is one additional bar in one of the side planes, bearing two metal knobs.
Historical Attributes: Designed and built about 1938, this is a model of the type of rack used hold the punched paper tape on the IBM Automatic Sequence Controlled Calculator (ASCC), commonly referred to as the Harvard Mark I.
Provenance: On March 13, 1997, this model was picked up from the Howard H. Aiken Computation Laboratory, 33 Oxford Street. It was transferred to the Collection by Edward P. Jackson, Facilities Manager in the Division of Engineering and Applied Sciences. It was placed on exhibition in the entrance area adjacent to IBM Mark I computer on the first floor of the Science Center, Harvard University.