IBM memory unit for the selective sequence electronic calculator (SSEC)
This is a black and white image showing the internal components of a tape drive for the SSEC calculator machine. Light is coming from the right side of the image. Written on verso side of image along top edge in blue ink is "TOP" and "SSEC Tape Drive". Also written on verso side of image on right side is "#1342".
International Business Machines Corporation (IBM)
7 x 5 in.
Publicity photograph; Identification photograph
IBM Selective Sequence Electronic Calculator (SSEC); Calculators--History; International Business Machines Corporation (IBM); Calculators; International Business Machines Corporation--History