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A-16
A,)
LOGIC
DIAGRAM
SET OUTPUT
RESET
OUTPUT
(
RI
DC RESET
R
2
R3
B) Truth Table and Boolean Equations
SD- AND result of the de set inputs.
SD= S 1 • S 2
Rn -
AND result of the de reset inputs.
RD= R 1 • R 2 • R 3
F
- state of the flip-flop (set output)
F' - previous state of the flip-flop
SD
RD
0
0
0
1
1
0
1
1
F
(Both set and reset outputs
1
0
F'
(no change)
F
=
R
(S +
F')
D
D
C.) Tl
MING DIAGRAM
{
0
1
- - - ,
I
DC
SET
L__J
LJ
DC RESET
SET OUTPUT
(I
_J
0
are O's.)
RESET
OUTPUT
(
~
' - - - - -
!5!56
Figure A-1 0.
DC Operation
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