ECE 461 (Spring 2005) - Homework 8 

Posted March 30 (revised April 1)
Due in class on April 6
	  

Grading policy

	Answers to only a subset of the questions will be graded for
	correctness of the answer and the procedure. Credit will be
        granted for attempting the other questions.


NOTE: ********************************************************
	This is the revised homework. Two more questions have
	been added, and readings below are revised.
      ********************************************************
		

Readings: Sections 7.1 through 7.6 (except section 7.5-1)
          (NOTE: Readings are revised) 

Problem numbers below refer to the textbook by McCluskey.

(A) Determine the behavior of the latch shown in Figure P7.1
    on page 322 (present a table that shows next state as a function
    of the inputs, similar to the tables in Figure 7.2-3).

(B) Problem 7.2(b) and (d)

(C) This question is on the circuit in Figure P7.3 on page 322.

	(a) Determine the transition table
 	(b) Determine all stable states, if any exist.
        (c) Identify all races, and critical races, if any exist.
        (d) Determine the flow table


(D) Problem 7.5(a) through (d).

(E) Problem 7.7(a), (b), (c) from McCluskey.
       In part (a), insert the amplifiers at the outputs
       of the following gates in the circuit in Figure P7.7:
          (i) the second gate from the top, in the left column
                containing four NAND gates.
          (ii) the bottom-most gate in the left column containing
               four NAND gates
          (iii) the topmost gate in the right column containing
                two NAND gates
       If additional amplifiers are needed to break all the
       feedback loops, insert those at suitable places.

       In part (c), provide only the transition table.

       Add the following parts to the question:

       (d) Identify all races, if any.
       (e) Identify one critical race, if there is any.
       (f) Provide the flow table