Present Next state Output z state 00 01 10 11 00 01 10 11 W2 Wi = в D (A) A B 1 1 B C B B D 0 1 0 C C B А 1 1 A C D D D - Figure 1: Flow Table Question Ila Part b The flow table of shown in Table 1 is for an asynchronous sequential circuit. For this table, determine a state assignment involving a minimum number of variables which allows for a race-free implementation. Then build the corre- sponding table of excitement. Assign the outputs when needed such asit has at most a simple change of output during the time where the network is unstable. It is assumed that the inputs x1 and x2 never change at the same time. Finally, obtain the expressions of minimum cost for the realization of the circuit using S-R type latches.

Computer Networking: A Top-Down Approach (7th Edition)
7th Edition
ISBN:9780133594140
Author:James Kurose, Keith Ross
Publisher:James Kurose, Keith Ross
Chapter1: Computer Networks And The Internet
Section: Chapter Questions
Problem R1RQ: What is the difference between a host and an end system? List several different types of end...
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Question
Present
Next state
Output z
state
W2 W1 = 00
01
10
11
00
01
10
11
A
A
B
D
(A
1
1
В
C
B
B
D
1 0 0
C
C
B
A
1 0
1
A C
D)
D)
D
1
-
Figure 1: Flow Table Question IIa
Part b
The flow table of shown in Table 1 is for an asynchronous sequential circuit.
For this table, determine a state assignment involving a minimum number of
variables which allows for a race-free implementation. Then build the corre-
sponding table of excitement. Assign the outputs when needed such asit has at
most a simple change of output during the time where the network is unstable.
It is assumed that the inputs rı and x2 never change at the same time. Finally,
obtain the expressions of minimum cost for the realization of the circuit using
S-R type latches.
Transcribed Image Text:Present Next state Output z state W2 W1 = 00 01 10 11 00 01 10 11 A A B D (A 1 1 В C B B D 1 0 0 C C B A 1 0 1 A C D) D) D 1 - Figure 1: Flow Table Question IIa Part b The flow table of shown in Table 1 is for an asynchronous sequential circuit. For this table, determine a state assignment involving a minimum number of variables which allows for a race-free implementation. Then build the corre- sponding table of excitement. Assign the outputs when needed such asit has at most a simple change of output during the time where the network is unstable. It is assumed that the inputs rı and x2 never change at the same time. Finally, obtain the expressions of minimum cost for the realization of the circuit using S-R type latches.
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