(adsbygoogle = window.adsbygoogle || []).push({}); 1. The problem statement, all variables and given/known data

Not really a HW question but say we follow the steps in converting a state diagram down to its excitation table - how do we determine whether the best ckt implementation would be best implemented with either a mealy or a moore system

2. Relevant equations

mealy :

state equation : Q = f(present state, current inputs)

output equation: Z = h(present state, current inputs)

Moore :

state eqaution : Q = f(present state, current inputs)

output equation: Z = h(present state)

3. The attempt at a solution

1) granted we 're given a function for a truth table

f(A,B,C,D...,etc) = logic function

2) we convert it into a state / excitation table depending on the kind of flip flops we want to use

Code (Text):

D flip flop:

q Q | D

0..0 0

0 1 1

1 0 0

1 1 1

not Q = C' . d + Q.D

or Q = D

T flip flops

q Q | T

0 0 0

0 1 1

1 0 1

1 1 0

Q = Tq' + T'q

J/K flip flops

q Q | J K

0 0 0 x

0 1 1 x

1 0 x 1

1 1 x 0

let x = don't care values

Q = Jq' + K'q

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# Generaly when designing mealy or moore ckts when to pick which?

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