IBM GX20-1971-0 UM/010 Flowcharting Template


This rectangular clear green plastic template has nineteen symbols relating to flowcharting and structured programming cut out of it. These are explained on the paper sleeve. The template has a nine inch scale, divided to tenths of an inch, across the top, a nine inch scale divided to eighths of an inch across the bottom, a three inch scale divided to twelfths of an inch on the right, and a scale nine centimeters long divided to millimeters on the left. A mark on the right reads: HIPO. Another mark reads: GX20-1971-0 UM/010. Another mark reads: IBM.

HIPO (Hierarchy plus Input Process Output) was a design aid and documentation technique developed by IBM in the 1970s.


Edward C. Yourdon, “Users Want too Much from HIPO: Yourdon,” Computerworld, vol. 19, #22, May 31, 1976, p. 24.

Date Made: ca 1975

Maker: IBM

Location: Currently not on view

Subject: Mathematics


See more items in: Medicine and Science: Mathematics, Flowcharting Templates, Science & Mathematics


Exhibition Location:

Credit Line: Gift of Prof. Michael R. Williams

Data Source: National Museum of American History

Id Number: 1997.3099.04Nonaccession Number: 1997.3099Catalog Number: 1997.3099.04

Object Name: Logic Template

Physical Description: paper (overall material)plastic (overall material)Measurements: overall: .1 cm x 25.2 cm x 11.5 cm; 1/32 in x 9 29/32 in x 4 17/32 in


Record Id: nmah_694226

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