# hw2sol - ECEN 248 Introduction to Digital System Design...

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Department of Electrical Engineering Assignment #2 Solutions 1. I want to schedule a meeting among 6 individuals Alice, Brian, Charles, David, Elise and Frank. The meeting must be scheduled so that the following rules are satisfied: Exactly one of Alice and Brian must be in the meeting. Charles and David must be present in the meeting together. If Charles is not available, David and Frank must be in the meeting together. However, all three of Charles, David and Frank must not be present. Elise is the manager of the group, so she must be present in the meeting. Each of the 6 team members indicates to me their availability for the meeting. I would like to construct a logic netlist with a single output g , such that g is equal to 1 whenever the meeting can be scheduled. (a) List the Boolean variables that you will need for the netlist. (b) Write down what both values of each variable indicate. (c) Draw the logic netlist using the gate types we discussed in class. (d) Write down the netlist as a set of logic equations. Solution. (a) The input variables are a , b , c , d , e and f . There is a single output variable g . Each variable is a Boolean variable (i.e. it can have one of two values 0 or 1 . (b) a = 1 indicates that Alice can attend the meeting. a = 0 means that Alice cannot attend. Similarly for variables b , c , d , e and f (where each variable corresponds to the first letter of the name of one of the team members). The output

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hw2sol - ECEN 248 Introduction to Digital System Design...

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