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  Home > JCE Print > Journal of Chemical Education > Issues > 1998  > June  >
Information • Textbooks • Media • Resources
Representing Numbers in the Computer: A Laboratory Exercise
Leslie Glasser
University of Witwatersrand, Department of Chemistry, Wits 2050, SOUTH AFRICA
Cover
June 1998
Vol. 75 No. 6
p. 778
Abstract
The finite memory of a computer creates problems in the representation and manipulation of non-integer ("floating point") quantities; it is explained how such problems can be magnified by inappropriate numerical procedures or ameliorated by careful data treatment. In order to clarify the issues involved, the methods by which characters, integers and floating point quantities are stored and handled in the computer are outlined. Then, a number of exercises is presented, for operation on both computers and calculators, by which the accuracy of number representation may be judged and which illustrate some of the problems which might arise in naive computational procedures.
Supplement
Instructions for the students and notes for the instructor are available.
*  Contents
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supp778.zip

supp778.sit
More Information
*  Citation
 Glasser, Leslie. J. Chem. Educ. 1998 75 778.
*  Keywords
 Computational Chemistry
*  History
 Created:
Last Updated:		 June 23, 1999
November 22, 2005
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