12/21/2015t. evartson1 enamkasutatavaid järjestikskeeme (sequential circuits) trigerid (latch,...
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04/21/23 T. Evartson 1
Enamkasutatavaid järjestikskeeme (Sequential Circuits)Trigerid (Latch, Flip-Flop)
1 0
R S
S RR S
R S
S
R
T
S R
Qt
0 0
Qt-1
0 1
01 0
11 1
X
Q
Q
S R
R S
1
1S
R
Q
Q
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04/21/23 T. Evartson 2
&
&S
R
Q
Q
S R
Qt
0 0
X0 1
11 0
01 1
Qt-1
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04/21/23 T. Evartson 3
Clk
Clk
0
1
0
1
EsifrontPositive edge, Rising edge
EsifrontPositive edge, Rising edge
TagafrontNegative edge, Falling edge
Periood T Period T
Periood T Period T
Taktsignaaali sagedus = 1/TClock frequency
Pulse width
Taktsignaal
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04/21/23 T. Evartson 4
S R c Qt
x x 0 Q t-10 0 1 Q t-1
0 1 1 01 0 1 11 1 1 -
D c Qt
x x Qt-1
0 0
1 1
QS
R
T
QC
TD
C
Q
Q
Sünkroonne D triger
&
&
&S
R
Q
Q
S R C Qt
X X 0 Qt-1
0 0 1 Qt-1
0 1 1 01 0 1 11 1 1 -
&
S
R
C
Sünkroonne SR triger
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04/21/23 T. Evartson 5
1 0
QS
R
T
D
D
D
D
1
D
Q
TD
C
Q
Q
CC
D C Qt
X 0 Qt-1
0 1 01 1 1
Ptentsiaaliga sünkroniseeritav D triger D Latch
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04/21/23 T. Evartson 6
1 &a b
de
d
e
b
a
1 &
D
C
TD
C
Q
Q
Frondiga sünkroniseeritav D-triger Edge trigered D Flip-Flop
D c Qt
x x Qt-1
0 0
1 1
QS
R
T
1
QCC
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04/21/23 T. Evartson 7
J K c Qt
x x x Qt-1
0 0 Qt-1
0 1 0
1 0 1
1 1 Qt-1
T c Qt
x x Qt-1
0 Qt-1
1 Qt-1
MS-triger
T-triger
JK-triger
TTJ
K
C
Q
Q
TTT
C
Q
Q
Qm
S
R
T
Qm
C
QS
S
R
T
QSC
Ss
Rs
1
S Sm
R Rm
Q
Q
C
CsCm
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04/21/23 T. Evartson 8
TT
J
K
C
Q
Q
S R J K C Qt
0 0 - - - -0 1 - - - 11 0 - - - 01 1 0 0 Qt-1
1 1 0 1 01 1 1 0 11 1 1 1 Qt-1
S
R
TT
T
C
Q
Q
T C Qt
- - 00 Qt-1
1 Qt-1
R
R100
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04/21/23 T. Evartson 9
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04/21/23 T. Evartson 10
d 0
d 1
d n-1
c
q 0
q 1
RG
q n-1
Registrid (Registers)
TT
C D
TT
C D
TT
C D
TT
C D
q0
C d0d1d2d3
q1q2q3
R
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04/21/23 T. Evartson 11
Nihkeregister
q 3 q 2 q 1 q 0
LI ROq 3 q 2 q 1 q 0
LO RIq 3 q 2 q 1 q 0
TT
cS
R
TT
cS
R
TT
cS
R
TT
cS
R
q3 q2 q1 q0
1
LI
C
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D
C
Q D
C
Q D
C
Q D
C
Q D
C
Q D
C
Q. . . . . .
Pralleelkujult järjestikkujule teisendus
Järjestikkujult paralleelkujuleteisendus
Infojärjestik-kujul qn-1 qn-2 q0
Info paralleelkujul
C
Info kantakse läbi paralleellaadimisesisendite kaudu nihkeregistrisse
Info paralleelkujul
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04/21/23 T. Evartson 13
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04/21/23 T. Evartson 14
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04/21/23 T. Evartson 15
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04/21/23 T. Evartson 16
Paralleel laadimiseta
CTC
E
q1
q2
q0
000
001
010
011
100
101
110
111
RG
d 0
d 1
d n-1
c
q 0
q 1
q n-1
Paraleellaadimisega
PL
if PL=1 then {D}=>{Q} else count
Loendur (Counter)
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04/21/23 T. Evartson 17
C
q3
q2
q1
q0
t1 t1 t1 t1
C
0 1 0 1 0 1 0 1 0 1
0 0 1 1 0 0 1 1 0 0
0 00000 1111
0000 0000 11
q1
q4
q3
q2