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