MGMT 1030 Lecture 27: MGMT 1030 Lecture 27 Notes
6 May 2018
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MGMT 1030 Lecture 27 Notes – Flowing Around
Introduction
• Notice that when you reach the right end of the scale, it continues by flowing around to
the left end.
• Counting corresponds to addition
• Thus, to add a number to another is simply to count upward from one number by the
other.
• As you can see from the examples in this diagram, simple additions are straightforward
and work correctly.
• To undestand ho this poess oks in a apaound situation, consider the
example shown
• As you can see in this case, adding 699 to the value 200 leads to the position 899 by
wrapping around the right end.
• Sine 6 is euialent to− and is euialent to−, 6+ is euialent to
− +, and the result of the addition is correct.
• The reason this technique works can also be seen in the diagram.
• The wraparound is equivalent to extending the range to include the addition on the
scale.
• The same final point should also be reached by moving to the left 300 units, which is
equivalent to subtracting 300.
• In fact, the result is off by 1.
• This occurs because we have again picked a scale with two values for 0, namely, 0 for +0
and fo −.
• This means that any count that crosses the modulus will be short one count
• Since 0 will be counted twice.
• In this particular example, the count to the right, which is the a addition 200 + 699,
yielded the correct result
• Since the modulus was not crossed.
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