CMPEN 270
SUMMER 2020
Assignment 7
DUE TUESDAY 07/21/2020 @ 11:59 pm
1) Give the characteristic equations and excitation tables for JK flip-flops, T flip-flops and a Dflip flops (3 points)
2) 2) Do the following Flip-Flop Conversions: (6 points)
a) DFF to TFF
b) TFF to DFF
c) TFF to JKFF
d) DFF to JKFF
3) The waveform for Clock is given below. Assuming there is no delay, generate the waveforms
for Q0, Q1 and Q2. (5 points)
4) The 4 states represented by Q1Q0 of the state machine below are labelled A = 00, B = 01, C =
10, D = 11. You are requested to analyse this machine. (5 points)
a) Using the circuit diagram and characteristic equations of the J-K flip-flop find the
transition equations for Q1* and Q0*.
b) Using the result in part (a), write the transition table.
c) Obtain the transition table. Assume that the state designations are in counting by 1 order
(i.e. A = 00, B = 01, etc.)
d) Draw the state machine diagram
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