Design & Implementation of a D Flip-Flop
D Flip-Flop
NOTE: Q* is defined as the next state of Q, while Q is the present state of Q.
INPUTS |
OUTPUTS |
||||
PRESET |
CLEAR |
Clock |
D |
Q* |
Q*’ |
L |
H |
X |
X |
H |
L |
H |
L |
X |
X |
L |
H |
L |
L |
X |
X |
H* |
H* |
H |
H |
Rising Edge of Clock |
H |
H |
L |
H |
H |
L |
L |
H |
|
H |
H |
L |
X |
Previous Q |
Previous Q’ |
Circuit Implementation