TitleThree papers from session of the Cambridge computer conference
DescriptionR. H. A. Carter gave a talk on "Checkable Addition Circuits" and distributed a copy of his paper to the attendees. This same paper appears in the conference proceedings (pages 97-102) and differes from this handout in the placement of the figures (here they are blue diazotype diagrams attached to several pages, but in the conference proceedings they are gathered at the end of the paper).
One paper by L. Kosten (a Dutch computer scientist) describe a special purpose digital calculator built in 1941 at The Hague Local Telephone Administration's Laboratory to simulate part of a telephone exchange in order to evaluate its probable performance. The other paper justifies the use of various assumptions.