A guide to tables on punched cards

How it was: Paper tapes and punched cards

Perforated paper products As you can imagine, it would be somewhat inconvenient to have a computer that forgot everything it knew if its operator turned it off before stepping out for a bite of lunch. Similarly, imagine a programmer's frustration if, after spending countless hours using a Switch Panel to enter a program, the janitor carelessly disconnected the computer in order to vacuum the of...

The Use of Punched Cards in Molecular Structure Determinations II

I N this article we discuss briefly the evalua­ tion of the intensity and radial distribution functions which are involved in the determina­ tion of the structures of gas molecules by the electron diffraction method.1 Heretofore, these calculations were by far the most time-consuming part of the entire investigation; however, with International Business Machines Corporation equipment and the pu...

The Use of Punched Cards in Molecular Structure Determinations. IV. Approximations to the Temperature Factor

Five cards: a simple guide to beginning the consultation.

doctor should allow the patient to speak freely at the start of the consultation, many doctors find it difficult not to interrupt, and tend to medicalise the patient's presentation prematurely. To help overcome these tendencies we use a simple description of the consultation as consisting of three parts, according to who should be leading the dialogue at the time (Figure 1). The consultation be...

a study on construction of iranian life tables: the case study of modified brass logit system

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