Results 131 to 140 of about 26,340 (190)

A PUNCHED‐CARD SYSTEM FOR SOIL PROFILES

Journal of Soil Science, 1962
Summary A punched‐card system, designed to make data on a large number of profiles readily available, is described. The problems of converting the data to a form suitable for punching on the card are fully discussed. A numerical code is used to group the profiles according to soil series, major soil group, or geographical location ...
J. W. MUIR, H. G. M. HARDIE
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Manually Sorted Punched Card System for Pharmaceutical Literature

Journal of Pharmaceutical Sciences, 1962
A 5 × 8 inch punched card and direct coding system for pharmaceutical literature is illustrated and described. Use of the cards for a cooperative literature searching system and for a separate complete article file is discussed. Although the punched card system was designed for use in a department of product research and development in a pharmaceutical
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A Punched Card System for Radiocarbon Dates

American Antiquity, 1957
At the present time there are nearly 1200 radiocarbon dates published from 11 different laboratories. These dates appear in a total of 6 books, monographs, mimeographed lists, and journals. While most of the dates appear in the publication Science, it is nonetheless difficult to sort through the various numbers of this journal in order to compile dates
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Hollerith punched card system development (1905-1913)

IEEE Annals of the History of Computing, 2005
The author traces the development of the Hollerith tabulating machine, what is part of the Hollerith punched card system during the years 1905 until 1913, and describes the machine's applications of most interest to customers at that time. Hollerith added the plugboard for flexible wiring to his tabulating machine for different applications, as a ...
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A punched-card system for graduate research

Journal of Chemical Education, 1953
Describes a punched-card system that can be used for organizing and facilitating the retrieval of research information.
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Application of Punched Card Indexing Systems to Orthopaedic Surgery

The Journal of Bone & Joint Surgery, 1957
Three methods of indexing orthopaedic surgery patients have been presented together with some of the problems. The small file is discussed in more detail since it should be of more general interest. The other methods are mentioned principally to demonstrate more clearly the reasons why certain types of codes have specific advantages in special ...
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Edge-punched card literature retrieval system for activation analysis

Journal of Radioanalytical Chemistry, 1968
The punched card bibliography composed on the basis of the system described above can be used to obtain information rapidly and accurately on the following problems: 1. Activation analytical determination of certain element(s), in general (examples: copper, cadmium, iodine, etc.). 2.
T. Braun, E. Bujdosó, M. Miskei
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A Punch Card Record System Designed for a Neuropsychiatric Tuberculosis Unit

Diseases of the Chest, 1965
culosis service at the Anoka State Hospital has been responsible for the treatment of over 1200 patients. These have been drawn from the ten hospitals in the Minnesota State Mental Hospital system, as well as from the state reformatory and prison system.
R D, SELLERS, W R, SCOTT, J D, TEXTOR, H D, ROOT, J F, PERRY   +4 more
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Simple input switching for a punched card data acquisition system

Journal of Physics E: Scientific Instruments, 1971
A method is described whereby the programming drum card on an IBM punch is used to control input selection and timing in a card data acquisition system.
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Shaping a technology: American punched card systems 1880-1914

IEEE Annals of the History of Computing, 1997
This paper addresses the initial development of the first punched-card system in the United States in the 1880s and the construction of the next punched-card machine generation, launched in 1907. Finally, aspects of punched-card systems in the 1910s give a perspective on this history.
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