Summary

Written/ hardcopy computer program titled 'Additional Instructions for Use with Four Word Floating Point Package'. DECUS Program library number 8-103(D). December 1967. Author: C.K.Ross, Bedford Institute of Oceanography, Canada. Published by the Digital Equipment Computer Users Society, Massachusetts.

Abstract: Subroutines to allow the 4-word floating point interpreter to perform the operations, read a floating point number, skip positive floating point accumulator, skip zero floating point accumulator, no operation, unconditional jump, negate floating point accumulator and halt.

The Digital Equipment Computer Users Society (DECUS) was set up by early users of the PDP-1 computer, which was manufactured by Digital Electronic Corporation (DEC), in Massachsetts, United States of America. The creation of DECUS was driven by the need to share information and computer programs for the PDP-1. One of the key reasons was that early users had to write their own software; DEC initially sold only hardware. Set up in 1961, DECUS grew to be one of the largest international societies of computer users in the world.

Physical Description

4 page, portrait format paper which is printed on both sides and stapled together in the top left hand corner. The front cover has the Decus Program Library name and logo printed in blue in the top register of the page. The booklet number, title, author, company, date and format are also listed in the front cover. The information is presented in text format only and is printed in black ink.

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