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Michael Covington

Michael A. Covington is the associate director of the Microelectronics Laboratory, Artificial Intelligence Center, the University of Georgia, Athens. He received a degree in linguistics from Yale University, New Haven, Conn. He has worked primarily in computer science since 1984.


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Author Articles

  • Control Camera Time Exposure Through A Computer's Serial Port

    By Michael Covington, June 12, 2008

    A computer’s serial port is a convenient source of low-speed dc control signals that are easy to set from software. For example, the RTS (request-to-send) line outputs about +9 V when “on” and -9 V when “off.” This idea shows how to use this sign

  • Tuning A Quadrature Encoder By Ear

    By Michael Covington, November 05, 2007

    The human ear is very good at detecting noise or missing cycles in a waveform, and since we have two ears, we can monitor two signals at once. I recently repaired an older lab instrument containing a quadrature encoder made with an inc

  • LED Indicates Current Magnitude

    By Michael Covington, May 26, 2005

    The LED in this circuit glows in proportion to the load current (see the figure). It was designed as a very compact substitute for an ammeter in the 12-V supply line of some astronomy equipment. The equipment includes low-power heating elements (dew p