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Calculator-Based Instrumentation: The Design of a Digital Interface Based on I2C Technology

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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

J. Chem. Educ., 2000, 77 (2), p 255

DOI: 10.1021/ed077p255

Publication Date (Web): February 1, 2000

Section:

History, Education, and Documentation

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.

Keywords (Audience):

High School / Introductory Chemistry

Keywords (Domain):

Analytical Chemistry

Keywords (Pedagogy):

Calculator-Based Learning

Keywords (Subject):

Instrumental Methods

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This article has been cited by 1 ACS Journal articles (1 most recent appear below).

Palm-Based Data Acquisition Solutions for the Undergraduate Chemistry Laboratory
Susan Hudgins , Yu Qin , Eric Bakker and Curtis Shannon
Journal of Chemical Education2003 80 (11), 1303
- Palm-Based Data Acquisition Solutions for the Undergraduate Chemistry Laboratory
  Susan Hudgins , Yu Qin , Eric Bakker and Curtis Shannon
  Journal of Chemical Education2003 80 (11), 1303
  Handheld computers provide a compact and cost-effective means to log data in the undergraduate chemistry laboratory. Handheld computers have the ability to record multiple forms of data, be programmed for specific projects, and later have data transferred ...
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