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PRESENTATION ONFlip Flop
Group Name : Bug Free.
Group Members:1.Sajibul Hasan 151-15-49862.Abdullah Al Noman 151-15-48533.Mehedi Hassan Khan 151-15-51544.Nahian Ahmed 151-15-5137
What is Flip flop
>>In digital circuits, the flip-flop, is a kind of bi-stable multivibrator.
>>It is a Sequential Circuits / an electronic circuit which has two stable states and thereby is capable of serving as one bit of memory , bit 1 or bit 0
Introduction : Types Of Flip Flop
1. SR Flip Flop a.SR Flip Flop Active Low = NAND gates b. SR Flip Flop Active High = NOR gates
2. Clocked SR Flip Flop 3. JK Flip Flop4. T Flip Flop5. D Flip Flop6. Master-Slave Edge-Triggered Flip-Flop
The Used of Flip Flop
• For Memory circuits • For Logic Control Devices • For Counter Devices• For Register Devices
SR Flip Flop - NOR GATE LATCH
R
S
Q
Q
S R Q0 0 Q0
0 1 01 0 11 1 Q=Q’=0
No changeResetSetInvalid
SR Flip Flop - NAND GATE LATCH
S
R
Q
Q
S R Q
0 0 Q=Q’=10 1 11 0 01 1 Q0
InvalidSetResetNo change
Clocked SR Flip Flop
S
RQ
QS
R
C
S
R
Q
Q
S
R
C
C S R Q0 x x Q0
1 0 0 Q0
1 0 1 01 1 0 11 1 1 Q=Q’
No changeNo changeResetSetInvalid
JK Flip Flop
T Flip Flop
T Flip Flop
D Flip FlopS
R
Q
Q
D
C
C D Q0 x Q0
1 0 01 1 1
No changeResetSet
Also Known as Data Flip flop Can be constructed from RS Flip Flop or JK Flip flop by addition of an inverter
Master-Slave Edge-Triggered Flip-Flop
D Latch (Master)
D
C
Q D Latch (Slave)
D
C
Q QD
CLK
Thank you for your Attention