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ece0132_hw1_fall2007

# ece0132_hw1_fall2007 - University of Pittsburgh Department...

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University of Pittsburgh Department of Electrical Engineering EE/CoE 0132 Fall 2007 Homework Assignment #1 Section A: Due Wednesday September 5, 2007 Section B: Due Thursday September 6, 2007 Homework Problems: The following problems are to be completed and turned in by the beginning of class on the due date. 1. In the figure below, the DATA BOX is an electronic device that is capable of asserting each of its outputs 0 5 Q Q to logical values of 1 or 0, which are represented by high and low voltages respectively. For the purposes of circuit analysis, when a given output has logic value 1, take this to mean that this output is connected to an ideal source of +5V, and when an output has logic value 0, it is connected to ground. + V out - D A T A B O X 6.8 k 4.7 k 3.3 k 2.2 k 1.5 k 1.0 k Q 5 Q 4 Q 3 Q 2 Q 1 Q 0 5V Let the state of the device be defined by the 6-bit binary word 0 1 2 3 4 5 Q Q Q Q Q Q . For any such state, we can determine the corresponding circuit model, and solve for the output voltage out V . (a) Suppose that the state of the device is 10101 0 0 1 2 3 4 5 = Q Q Q Q Q Q . Draw the corresponding circuit model under this condition. Perform elementary circuit analysis to determine out V , showing all calculations. (b) Repeat part (a) for states 011011 and 011001.

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ece0132_hw1_fall2007 - University of Pittsburgh Department...

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