THE H. P. D. LOGIC A Digital System for the Transmission of Measurements from Bubble Chamber Photographs directly into a Computer

摘要

The Hough-Powell Device (H.P.D.) is an apparatus for fast, precise measurement of bubble chamber photographs.nThis paper describes the logic and circuitry of the H.P.D., the function of which is to digitize the data, and transfer the co-ordinates directly into an IBM 709 computer.nIn general, the circuitry can be used wherever it is desirable to link a measuring system directly to a computer or, with minor modifications, to a magnetic tape unit.