(41C) RECKONERS

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An extract from RECKONERS the prehistory of digital computers, from Relays to the Stored Program Concept, 1935-1945, Paul E. Ceruzzi, Contributions to the Study of Computer Science, Number 1, Greenwood Press, 1983, ISBN: 0-313-23382-9

APPENDIX
Program Listings
   Following are listings of original program codes written for the Z3 and ASCC. Each is then translated into a program for an HP 41C pocket calculator. While this calculator employs a logic quite different from the Zuse and Aiken machines, I have written the programs for it to conform as closely as possible to the logical flow of the originals.
   I also include a 41C program that "emulates" the operation of the Bell Labs Model I as it performed complex division. This program requires a printer connected to the 41C.

(1) EVALUATING A 3 x 3 DETERMINANT ON THE Z3 …
LISTING OF A CORRESPONDING PROGRAM FOR THE HP 41C CALCULATOR
…
(2) EVALUATION OF THE POLYNOMIAL …
HP 41C CALCULATOR PROGRAM FOR THE SAME PROBLEM
…
(3) HP 41C LISTING TO DIVIDE TWO COMPLEX NUMBERS
…

one for the 'archivists' among us;

BEST!
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