La lettura semiautomatica delle registrazioni nell'I.N.G.

In this paper, after a short comparative examination<br />between the analogical and the digitai records, the AA. present a simple<br />apparatus made in the « Istituto Nazionale di Geofisica » in order to read semiautomatically<br />the analogical records of the institute in the various fields<br />of the geopliysics. The apparatus consists in an analog digitizer, which transforms the<br />ordinate of the record trace in a number of impulses proportional to this<br />ordinate and prints this number on a paper tape.<br />The hour of the ordinate and the numbers for the record identification<br />are printed on the paper tape by means of some rotary switches.<br />In the last part of this paper the AA. present a codex in order to identify<br />the record, the observatory, the apparatus, etc.; this codex, is used<br />in the « Istituto Nazionale di Geofisica ». It is analog to the codex of the<br />UCD, but it is very different for the numerous improvements, which have<br />been necessary for its employment in the institute.<br />This apparatus for its simplicity makes very easy the work of the<br />operator with a saving a lot of time; it can prepare rapidly the data in<br />order to forward these to a digital computer for the elaboration, to compute<br />the absolute data and the diurnal, monthly and annual variations, to<br />research the eventual correlations, and to write the monthly bullettins<br />directly.

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