IBM Computation of Sums of Products for Positive and Negative Numbers  

Oleh:

Burke, Paul J.

Jenis: Article from Journal - e-Journal
Dalam koleksi: Psychometrika: A Journal of Quantitative Psychology vol. 17 no. 2 (Jun. 1952), page 231-238.
Topik: IBM Computation; Products
Fulltext: IBM Computation of Sums of Products for Positive and Negative Numbers.pdf (115.73KB)

Isi artikel

The wiring of the plugboard of the IBM type 405 machine for the computation of sums of squares and cross products of positive and negative numbers is described. The method makes greater demands on the X distributor and class selector capacity of the machine than does the method of wiring the plugboard when the numbers all have the same sign.

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