When designers are required to connect more than a few switches to a microcontroller, they often use
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Question:
When designers are required to connect more than a few switches to a microcontroller, they often use a matrix connection technique to minimize the number of digital I/O lines used.
(i) Draw a diagram for a set of eight switches connected in a 2 by 4 matrix format to digital pins of a microcontroller.
(ii) Outline the algorithm used to read the switches
You are required to measure the angle of an industrial flow control valve.
(i) Describe three possible methods of measuring this angle.
(ii) Which one would you choose for this application and why?
Related Book For
Income Tax Fundamentals 2013
ISBN: 9781285586618
31st Edition
Authors: Gerald E. Whittenburg, Martha Altus Buller, Steven L Gill
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