Computer Science 150 Homework Assignment 7
Spring 1997

Due: Thursday, April 10, 5:00 pm

The numbers in brackets [ ] denote the relative marks assigned for each question.

  1. A manufacturing error results in a batch of flip-flops with cross-coupled NOR/NAND gates as shown below:


    2. (a) Show a primitive flow graph for the circuit. [20]

    (b) Show that this device cannot be reset via its input terminals A and B. [20]

  2. A sequential system is comprised of two feedback logic functions:




Under what input conditions will the system oscillate? [20]

pchong@cory.eecs.berkeley.edu