Presentation on Flip Flop

1. PRESENTATION ON
Flip Flop
Group Name : Bug Free.
Group Members:
1.Sajibul Hasan 151-15-4986
2.Abdullah Al Noman 151-15-4853
3.Mehedi Hassan Khan 151-15-5154
4.Nahian Ahmed 151-15-5137

2. 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

3. 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 Flop
4. T Flip Flop
5. D Flip Flop
6. Master-Slave Edge-Triggered Flip-Flop

4. The Used of Flip Flop
• For Memory circuits
• For Logic Control Devices
• For Counter Devices
• For Register Devices

5. SR Flip Flop - NOR GATE LATCH
R
S
Q
Q
S R Q
0 0 Q0
0 1 0
1 0 1
1 1 Q=Q’=0
No change
Reset
Set
Invalid

6. SR Flip Flop - NAND GATE LATCH
S
R
Q
Q
S R Q
0 0 Q=Q’=1
0 1 1
1 0 0
1 1 Q0
Invalid
Set
Reset
No change

7. Clocked SR Flip Flop
S
R
Q
Q
S
R
C
S
R
Q
Q
S
R
C
C S R Q
0 x x Q0
1 0 0 Q0
1 0 1 0
1 1 0 1
1 1 1 Q=Q’
No change
No change
Reset
Set
Invalid

8. JK Flip Flop

9. T Flip Flop

10. T Flip Flop

11. D Flip Flop
S
R
Q
Q
D
C
C D Q
0 x Q0
1 0 0
1 1 1
No change
Reset
Set
Also Known as
Data Flip flop
Can be constructed
from RS Flip Flop
or JK Flip flop by
addition of an
inverter

12. Master-Slave Edge-Triggered Flip-Flop
D Latch
(Master)
D
C
Q
D Latch
(Slave)
D
C
Q QD
CLK

13. Thank you for your Attention