100_2007_fa_final

# 100_2007_fa_final - Score summary(leave blank P1 P2 P3 P4...

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1 UNIVERSITY OF CALIFORNIA College of Engineering Department of Electrical Engineering and Computer Sciences Final Exam EECS 42/100 B. E. BOSER FALL 2007 Closed book, closed notes. One (1) double sided 8.5” x 11” handwritten sheet of notes. Note: notes falling outside this description (e.g. two single sided sheets) will be confiscated. The minimum penalty for violations is 20 points. No calculators. Leave pack, books, and electronic devices (e.g. cell phones) in isle. Copy your answers into marked boxes on exam sheets. Simplify numerical and algebraic results as much as possible. Up to 10 points penalty for results that are not reasonably simplified. Mark your name and SID at the top of the exam and all extra sheets. Be kind to the graders and write legibly. No credit for illegible results. No credit for multiple differing answers to the same question. The UC rules on dishonesty apply. Name: ___________________________ SID: ___________________________ Name of student left of you: ____________________________________ Name of student right of you: ____________________________________ Score summary (leave blank): P1: P2: P3: P4: P5: P6: P7: P8: P9: P10: Total: _____

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2 Problem 1 [10 points] Shown below is a logic gate. Transistors are represented as switches which can be modeled as an ideal open circuit (no current flowing) when the switch is off, and a resistor of value R when the switch is on. When the input changes from A=0, B=1 to A=0, B=0, the output F of the gate transitions from logic 0 to logic 1. Because of the finite switch on-resistance R and load capacitance C (e.g. from wiring) this transition is not instantaneous. In practice this effect sets the maximum operating frequency of digital circuits.
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100_2007_fa_final - Score summary(leave blank P1 P2 P3 P4...

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