![](http://archive.computerhistory.org/resources/still-image/Digitor/102622696.03.01.lg.jpg)
Title
Digitor Learning Arithmetic ModuleCatalog Number
102622696Type
Still imageDescription
Black and white image of a Digitor module, developed to assist students in mastering basic mental arithmetic computations in addition- subtraction- multiplication and division.Identifying Numbers
Other number | 1136 Copy 2 |
Dimensions
overall: 8 in x 5 inCategory
PhotographCredit
Courtesy of Gwen BellLot Number
X7413.2015Related Records
X558.85 | Digitor Learning Arithmetic Module |