circuite numerice

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CIRCUITE NUMERICE CIRCUITE NUMERICE CURS NR. 9 III.1.2 CBB tip JK III.1.2.1 CBB tip JK asincron Tabelul de adevăr: 0 1 1 1 1 0 1 1 1 1 0 1 1 0 0 1 0 1 1 0 0 0 1 0 1 1 0 0 0 0 0 0 Q n+1 Q n K n J n t n+1 t n Q n+1 =Q n Q n+1 =0 Q n+1 =1 Q n+1 =Q n

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t n. t n+1. J n. K n. Q n. Q n+1. 0. 0. 0. 0. 0. 0. 1. 1. 0. 1. 0. 0. Q n+1 =Q n. Q n+1 =Q n. Q n+1 =0. Q n+1 =1. 0. 1. 1. 0. 1. 0. 0. 1. 1. 0. 1. 1. 1. 1. 0. 1. 1. 1. 1. 0. CIRCUITE NUMERICE. 1. III.1.2 CBB tip JK. III.1.2.1 CBB tip JK asincron. - PowerPoint PPT Presentation

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Page 1: CIRCUITE NUMERICE

CIRCUITE NUMERICECIRCUITE NUMERICE

CURS NR. 9

1III.1.2 CBB tip JK

III.1.2.1 CBB tip JK asincron

Tabelul de adevăr:

0111

1011

1101

1001

0110

0010

1100

0000

Qn+1QnKnJn

tn+1tn

Qn+1=Qn

Qn+1=0

Qn+1=1

Qn+1=Qn

Page 2: CIRCUITE NUMERICE

CIRCUITE NUMERICECIRCUITE NUMERICE

CURS NR. 9

2

10011

11000

10110100 JnKn

Qn

Qn+1= + Kn·Qn

01101

00110

10110100 JnKn

Qn

Qn·Kn + Jn·QnJn·Qn Qn+1=

11 nn QQ nnnn QKQJ nnnnnn QKQQQJ 0

nnnnn QKQJQ )(

nnnnn QKJQQ )( nnnnn QKJQQ )(

)( 11 nn QQnnnn QKQJ nnnnnn QKQQQJ

0

)( nnnnn QKQQJ

)( nnnnn QKQQJ nnnnn QKQQJ

Page 3: CIRCUITE NUMERICE

CIRCUITE NUMERICECIRCUITE NUMERICE

CURS NR. 9

3

J

K

Q

Q

S

R

nS nn QJ nnn QJS

nR nn QK nnn QKR

nnnnnn QKJQQQ )(1

nnnnnn QKQQJQ 1

J

K

Q

Q

S

R

Page 4: CIRCUITE NUMERICE

CIRCUITE NUMERICECIRCUITE NUMERICE

CURS NR. 10

4

J

K

Ck

Q

Q K

J

Ck

Q

Q

Presupunem Q=1 şi Q=0

J=K=Ck=1

R=1

S=0

Q=0

Q=1

R=0

S=1

Q=1

Q=0

R

S

Page 5: CIRCUITE NUMERICE

CIRCUITE NUMERICECIRCUITE NUMERICE

CURS NR. 10

5

III.1.2.2 CBB JK master-slave

Schema logică a CBB JK master-slave este următoarea:

K

J

Ck

Q’

Q’

S’

R’

S”

R”

S

R

J S Q Ck K R Q

K

J

Ck

Q

Q

Page 6: CIRCUITE NUMERICE

CIRCUITE NUMERICECIRCUITE NUMERICE

CURS NR. 10

6Tabelul de adevăr:

101

010

Qn00

Qn+1CkKnJn

Qn11K

J

Ck

Q’

Q’ K

J

Ck

Q

Q

S’

R’

S”

R”

S

R

P1

P2

Page 7: CIRCUITE NUMERICE

CIRCUITE NUMERICECIRCUITE NUMERICE

CURS NR. 10

7

K

J

Ck

Q’

Q’ K

J

Ck

Q

Q

S’

R’

S”

R”

S

R

P1

P2

Page 8: CIRCUITE NUMERICE

CIRCUITE NUMERICECIRCUITE NUMERICE

CURS NR. 10

8

K

J

Ck

Q’

Q’ K

J

Ck

Q

Q

S’

R’

S”

R”

S

R

P1

P2

Page 9: CIRCUITE NUMERICE

CIRCUITE NUMERICECIRCUITE NUMERICE

CURS NR. 10

9III.1.3 CBB tip T

Qn1

Qn0

Qn+1CkTt

T

tCk

tQ

J S Q Ck K R Q

TCk

Page 10: CIRCUITE NUMERICE

CIRCUITE NUMERICECIRCUITE NUMERICE

CURS NR. 10

10

nn

nn

nn

nnn

nnn

QTS

QTR

TKJşi

QJS

QKR R Q Ck S Q

T

CkIII.1.4 CBB tip D

Tabelul de adevăr:

111

101

010

000

Qn+1QnDn

tn+1tn

D S Q Ck R Q

Page 11: CIRCUITE NUMERICE

CIRCUITE NUMERICECIRCUITE NUMERICE

CURS NR. 10

11

0XX0

X110

1X01

1

1

0

0X00X

11

01

10

00

Qn+1KnJnSnRnQnDn

CBB RS în CBB D:

001

1X0

10 Qn

Dn

Rn= Dn

X11

000

10 Qn

Dn

Sn= Dn

R Q Ck S Q

D

Ck

0X1

1X0

10 Qn

Dn

Kn= Dn

X11

X00

10 Qn

Dn

Jn= Dn

K Q Ck J Q

D

Ck

CBB JK în CBB D:

Page 12: CIRCUITE NUMERICE

CIRCUITE NUMERICECIRCUITE NUMERICE

CURS NR. 10

12III.1.5 Conversia CBB

a) D în JK

0011111011111011100100110000101110000000

DnQn+1QnKnJn

CBB doritCBB existent

D Q

QCk

?J

K

Ck

Page 13: CIRCUITE NUMERICE

CIRCUITE NUMERICECIRCUITE NUMERICE

CURS NR. 10

13

10011

11000

10110100 JnKn

Qn

Dn= + Kn·QnJn·Qn

Schema de conversie:

D Q

QCk

JK

Ck

Page 14: CIRCUITE NUMERICE

CIRCUITE NUMERICECIRCUITE NUMERICE

CURS NR. 10

14

a) T în D

T Q

QCk

?D

Ck1101

1010

0000

TnQn+1QnDn

0111

011

100

10 Dn

Qn

Tn= Qn ·Dn

Diagrama VK

Tabelul de adevăr:

+ Qn ·Dn = DnQn

T Q

QCkD

Ck