The Digital Computer by K. C. Parton and P. Hammond (Auth.)

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By K. C. Parton and P. Hammond (Auth.)

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POSITION |1 NEBULA SHEET OTHER DETAILS FIG. 19. Workingfilefor commercial autocode version of TA 227. NAME 2 \ 3 / / r Ί FILE OUTLINE RUN / LEVEL LEVEL Γ [ RUN 1 a 25 O O > Q o o THE DIGITAL COMPUTER the coefficients noting that describing letters as well as the values are to be printed in the output. Full details have to be specified of all parts of the output including the positions of the numerical and fractional parts, and zeros or blanks as required. Similarly, the full details of where to print the alternative output variables called real and imaginary roots are also all set out in this print file.

The set of overall possibilities, therefore, becomes as shown in Fig. 26. In general, the compiling times are many times longer than the actual running time of the final programme, so that if a considerable amount of work is expected to be of an experimental or developmental nature, or if commercial programmes are needed where a lot of programme changes due to changing circumstances are anticipated, then the times for the compiling runs must always be high and will tend to determine the actual capacity of the machine.

61 X 0-. 4 0 . 5 7 X 0 . V. V. 50 2 . 25 2 . 26 X 1' I 9 0 . 390 0. 3 21217 5304 TOTAL COPPER LOSS, 75 DEQ. C. V. = COST OF ACTIVE MATERIAL IRON = 2241. 920 TOTAL = 3899·4 FIG. 16. Computer output of MA 53. 30 EXAMPLES OF WORKING ADVANCED DESIGN PROGRAMMES Thus five designs done at one time will take approximately half an hour, costing £30 on a Mercury computer. The equivalent time for a designer would be about 9 weeks if he carried out the work to the same detail by hand, which in any case is not really practicable because of the very laborious mathematics involved in blocks 4 and 4(a).

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