MC48 Homework 4 (Fall 1996)
Due: October 22, 1996
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This semester I teach classes at the following times:
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first period Monday, Tuesday, Thursday, and Friday
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second period Monday, Wednesday, and Friday
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fourth period Monday, Tuesday, Wednesday, Thursday, and Friday
Write a truth table for determining whether I should be teaching or
not. There are six inputs. Three of them, D2,
D1, and D0, encode the day
as a binary numeral (with D0 being the least
significant bit). Sunday is day 0, Monday is day 1, etc. The other
three inputs, H2, H1, and
H0, similarly encode the period as a binary
numeral (with 1 being first period, etc.). There is only one output,
which should be a 1 if I teach a class at the inputted day and time, a
0 if I don't. However, for any time on Saturday, Sunday, or the
non-existent day 7, I don't care about the output. Don't bother writing
the rows of the truth-table that have don't care outputs, just rows
with an output of 0 or 1. Use input don't cares to write as few rows
as you can. You should be able to do it in nine rows.
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Do exercise 5.1 on page 404 of the textbook. The reference to page
119 should be to 123. The reference to page 350 is to the correct
page, except that figure 5.29 is one of the ones included in the
errata; you should use the version in the errata. The reference to
page 339 is correct.
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Do exercise 5.2 on page 404 of the textbook. The reference to page
340 is correct.
Instructor: Max Hailperin