*Sequential logic circuit:.

1. *Sequential logic circuit:. chapter5 It is consist of logic getes and storge element (memory element )the o\p depend of i\p and the past i\p the flip flop circuit sitis the basic desigen of it. *synchronous sequential circuits: The system whose behavior can be defined form the know lodge of its signal at descrete of time..

2. *the storg element use one time.delay devices (clock generator) Control storge element clocked sequential circuit The storge element(memory)use in clocked sequential cct are called llip flop… * flip flop: Is binary storge device capuble of storge one bit of information . Asequentialcct my use many flip flops to store as many bits as no necessary,,

3. combinatial I\ps o\ps logic cct Memory element o\p

4. combinatial o\ps I\ps logic cct flip_-flop (memory) Clock pulese

5. Type of storge element: 1-latch: It’s the circuit with tow cross coupled no rgetes or two cross-coupled NAND getes two I\ps labeled S (set) and R (reset) ,and it,s basic cct from which all flip-flop are constructed.. Active high enable… S Q S Q R R Q Q

6. SR latched of high enable Truth table S-R latch of high enable

7. S Q Q R RS latch M of high enable Sequent clock=synchsequetcct=clock sequecct+ Storget clock=flip flop

8. D En Q Q “block diagram D latch”

9. Active low enable; S(set) Q Q R(reset)

10. Logic cct active low enable SR latch “truth table active low enable SR latch”

11. Storage element: Flip flop.. Types of flip flop... *it is construction of tow dlatches and inverter. The first latch is called the(master)and the second called the(slave) D latch D D lathe D en (masta) en slave clk Black diagrom D flip flop

12. D D Q clk Q clk Positv edge Negativ edge Positv edge Negativ edge

13. Flip flop truth table J D Q K clck Q Logic cct JK flip flop

14. Truth table JK flip flop

15. S Q Q R SR latch M of high enable Sequent clock=synchsequentcct =clock sequecct Storget clock=flip flop