1970 HUNGARIAN CENSUS OF POPULATION Information on the data collection and processing (1977)

I. THE COMPREHENSIVE REWIEV OF THE DATA COLLECTION AND PROCESSING - 8. The electronic data processing of the census of 1970

erate the input files which are needful to the tabulation and consist of records, the positions of which contained the code-numbers of a line or a row of a table to be prepared. The tabulation took place by means of a general programme controlled by .parameters. In a single run, 18 tables showing 82 lines and 110 positions with a changing number of headings have been prepared and transferred to magnetic tape, without indicating the totals of rows or colums and the text. These recorded data have been stored on magnetic tapes for the processing of the nation-wide data. During the tabulation activity, the tables were provided with the rows and columns showing the grand totals and the text, by means of a general programme controlled by parameters, in line printers and magnetic tapes. The storing of the parameters took place in magnetic discs, in indexed sequential order, th From the 16 volume on, instead of a paper tape - controlled Eichner automatic typewriter, after the acquisition of a lower-case string, the mirror-plates to be photographed have been directly prepared from the magnetic tapes. That resulted in a considerable saving of transit time. The transit time for a county (24 in the whole) extended from 2-3 weeks to a month, depending on the capacity of the machine. The basis data had to be ordered once, by means of library program, according to regional coding, flat and serial number of the person. The programmes were written in COBOL language, with the multiprogramming taken into consideration. The staff personnel working in the Computing Centre and dealing with the organization, programming, processing and administration of the tasks concerning the census, was the following: organizers 2 persons programmers 2 persons administrative 2 persons // THE TRANSFORMATION OF THE DATA OBTAINED BY MEANS OF THE SAMPLE 25 p. c. REPRESENTATIVITY TO FULL-SCALE DATA The sample of 25 per cent representativity has not been processed on the basis of the frequencies of the cases occurred in the reality, but by means of transformation to full-scale data. In the present case it was more than a simple multiplication; it meant really a more efficient projection technique. This transformation of data took place separately for each town and for communities aggregated on county-level. Strata had been selected (21), according to the population category, sex, activity and groups of age. At first the basic stocks and from the sample of 25 per cent representativity the distribution according to the strata have been worked out; finally, the characteristic index numbers separately for each strata have been computed, consisting of two integers and 4 decimals. The integers point to the full-scale value of the first element, while the decimals have been added, as residuals, to the multiplier value belonging to the following element, when the integers gave the full-scale value of the second element, and so on. The tasks as described in the above, were performed by the machine in one run, for each sample of 25 per cent representativity (samples of individuals, dwellings and buildings). 75