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  Home > JCE Print > Journal of Chemical Education > Issues > 2000  > February  >
In the Laboratory
Calculator-Based Instrumentation: The Design of a Digital Interface Based on I2C Technology
A. B. Hickman and Robin S. Helburn
Department of Chemistry, Northern Arizona University, Flagstaff, AZ 86011

W. G. Delinger
Department of Physics & Astronomy, Northern Arizona University, Flagstaff, AZ 86011

Cover
February 2000
Vol. 77 No. 2
p. 255
Abstract
In this work, we describe the interfacing of a digital temperature sensor to a Texas Instruments TI-85 calculator to make a portable instrument. The design of the interface is based on an integrated circuit that uses the inter-integrated circuit (I2C) protocol. Communications between the sensor and the calculator using this protocol are established with assembly language subroutines that are stored in the calculator's memory. We indicate how this interfacing technique could be used to develop other portable instruments.
More Information
*  Citation
 Hickman, A. B.; Delinger, W. G.; Helburn, Robin S. J. Chem. Educ. 2000 77 255.
*  Keywords
 Instrumental Methods; Laboratory Computing / Interfacing; Laboratory Equipment / Apparatus; Analytical Chemistry
*  History
 Created:
Last Updated:		 January 5, 2000
April 15, 2005
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