Chaekyunx’s Weblog “simple informatics cabin”

bilangan kelipatan 3!

Posted on: Oktober 19, 2008

 Buatlah rangkaian sequential 4 bit untuk menampilkan bilangan kelipatan 3 ( 3, 6, 9, 12, 15 )dimana bila bilangan yang ditampilkan genap, lampu indikator akan menyala!

 

Present State

Next State

 

A

B

C

D

A

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D

L

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C

 

 

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D

 

 

A               F(A) = AC’ + CD’

                                 = ((AC’)’(CD’))

 

 

 

 

 

 

 

 

 

C

 

 

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D

 

 

B    F(B) = AC’ + B’C

                    = ((AC’)’(B’C))

 

 

 

 

 

 

 

 

C

 

 

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D

 

 

C   F(C) = AB + A’B’      

                    = ((AB)’(A’B’))

 

 

 

 

 

 

 

D              

 

 

C

 

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D

 

 

                  F(D) = B+D’

                                 = (B’D)’

 

 

 

 

 

 

L                                                                            F(L) =  AB’ + A’D                             

 

 

C

 

 

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D

 

 

                                   =  ( B’ + D )

                                   =  (BD’)’

 

 

 

 

 

 

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