Artifact Details

Title

Stencils for Solving x2=a(modm) calculating stencils

Catalog Number

102716034

Type

Physical object

Date

1940 ca.

Manufacturer

University of California Press

Place Manufactured

U.S.

Identifying Numbers

Other number 1940 Copyright date
Other number 706953 IBM number printed on all cards

Dimensions

in box: 3 3/8 in x 8 in x 2 5/8 in

Description

Object consists of hundreds of stencils with various parameters for calculations including different "exclusion modulus" numbers, different quadratic characters of "m" and different value of "a/m." Also included is a manual. The manual mentions that the stencils are made on Hallerith cards.

Category

Pre-computer/other

Credit

Gift of Eryk Vershen

Lot Number

X5295.2009