Flip - Flops

Oct 18, 2012

270 likes | 634 Vues

Share Presentation

Embed Code

Link

prentice

Télécharger la présentation

Flip - Flops

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

Flip-Flops

Flip-Flops. Basic concepts. Flip-Flops. A flip-flop is a bi-stable device: a circuit having 2 stable conditions (0 or 1) 3 classes of flip-flops latches: outputs respond immediately while enabled (no timing control) pulse-triggered flip-flops: outputs response to the triggering pulse

2.91k views • 32 slides

Flip-Flops

Flip-Flops. Lecture L8.2 Section 8.1. !S. Q . !Q. !R. Recall the !S-!R Latch. !S !R Q !Q. 1. 0. 0 0 0 1 1 0 1 1. 1 1 Disallowed. 1 0 Set. 0 1 Reset. 1. 1. 0 1. Store. 1 0. Q 0 !Q 0. X Y nand. 0 0 1 0 1 1 1 0 1 1 1 0.

1.22k views • 30 slides

Flip-Flops

Flip-Flops. Last time, we saw how latches can be used as memory in a circuit. Latches introduce new problems: We need to know when to enable a latch. We also need to quickly disable a latch. In other words, it’s difficult to control the timing of latches in a large circuit.

984 views • 25 slides

FLIP FLOPS

FLIP FLOPS. Prepared by: Careene McCallum-Rodney. INTRODUCTION TO FLIP FLOPS. These are sequential circuits that use a clock (which is asynchronous) to regulate the inputs to each circuit. This gives the circuit time to process the input and give the required results (propagation delay ).

611 views • 24 slides

Flip Flops

Flip Flops. Engr. Micaela Renee Bernardo. S. Q. Q. R. Latches. A latch is a temporary storage device that has two stable states (bistable). It is a basic form of memory. .

750 views • 31 slides

Flip - flops

Flip - flops. Q Q. We begin our study of such circuits be discussing the elements necessary to implement the “storage” portion of sequential systems. I present a simple combinational circuit that will store events (binary signals) that have occurred in the past. R (reset) S (set).

766 views • 15 slides

Flip-flops

Flip-flops. Combinational logic circuit. Basic Latch. Both circuit are the same The only feedback path is the red line. Basic Latch. Consider Set = 0, Reset =0. Basic Latch. Consider S = 1, R =0 As S=1, NOR1 output must be 0 As NOR1 ouput = 0 and R =0, NOR2 output must be 1. Basic Latch.

523 views • 29 slides

Flip Flops

Flip Flops. Flip Flops. Flip-flops serve as the elementary units for memory in digital systems. Two features are needed: 1. The circuit must be able to “hold” either state (a high or low output) and not simply reflect the input at any given time.

761 views • 23 slides

Flip-Flops

Flip-Flops. 1 0 1 0. S R Q Q’ 1 0 0 1 1 1 0 1 (after S = 1, R = 0) 0 1 1 0 1 1 1 0 (after S = 0, R = 1) 0 0 1 1. S (set) R (reset). 1 2. Q Q’ ’. (a) Logic diagram (b) Truth table. Basic RS Flip-Flop (NAND). A flip-flop holds 1 "bit".

451 views • 25 slides

Flip-Flops

Flip-Flops. ELEC 311 Digital Logic and Circuits Dr. Ron Hayne Images Courtesy of Cengage Learning. RS Flip-Flop. D Flip-Flop. D Flip-Flop Timing Diagram. (Falling-edge trigger). JK Flip-Flop. J-K FF Timing Diagram.

413 views • 6 slides

Flip Flops

Flip Flops. Sequential Logic Devices Flip Flops By-Pass Capacitors. Sequential Logic Devices. In a sequential logic device, the timing or sequencing of the input signals is important. Devices in this class include flip-flops and counters.

632 views • 34 slides

FLIP-FLOPS

8. FLIP-FLOPS. LEACH, MALVINO & SAHA. RS Flip-Flop. A flip-flop is a bistable electronic circuit that has two stable states—that is, its output is either 0 or +5vdc Basic Idea. RS Flip-Flop. Standard logic symbol of RS flip-flop NOR-Gate Latch. NOR-gate flip-flop.

7.5k views • 18 slides

Flip-Flops

Flip-Flops. Last time, we saw how latches can be used as memory in a circuit. Latches introduce new problems: We need to know when to enable a latch. We also need to quickly disable a latch. In other words, it ’ s difficult to control the timing of latches in a large circuit.

540 views • 27 slides

Flip-flops

Flip-flops. Outline. Edge-Triggered Flip-flops S-R Flip-flop D Flip-flop J-K Flip-flop T Flip-flop Asynchronous Inputs. Outline. Edge-Triggered Flip-flops S-R Flip-flop D Flip-flop J-K Flip-flop T Flip-flop Asynchronous Inputs. Clock signal. Positive edges. Negative edges.

979 views • 21 slides

Flip-Flops

Flip-Flops. RS F lip-flop. S. X. Inputs. Outputs. R. X. RS F lip-flop - definition. RS F lip-flop waveforms. RS Flip-flop. Types of flip-flops: a) dynamic b) synchronized. Example. Example continuation. RS flip-flop formed by cross-coupling NOR gates.

690 views • 27 slides

Flip-Flops

Flip-Flops. Section 4.3 Mano & Kime. D CLK Q !Q. 0 1 0 1 1 1 1 0 X 0 Q 0 !Q 0. D Latch. S. !S. D. Q. CLK. !Q. !R. R. Note that Q follows D when the clock in high, and is latched when the clock goes to zero. D. Pulse-narrowing circuit. CLK.

338 views • 14 slides

Flip-Flops

Flip-Flops. Module M10.2 Section 7.1. D CLK Q !Q. 0 1 0 1 1 1 1 0 X 0 Q 0 !Q 0. D Latch. S. !S. D. Q. CLK. !Q. !R. R. Note that Q follows D when the clock in high, and is latched when the clock goes to zero. D. Pulse-narrowing circuit. CLK.

534 views • 18 slides

Flip Flops

Flip Flops. Clock Signal. Sequential logic circuits have memory Output is a function of input and present state Sequential circuits are synchronized by a periodic “clock” signal. Clock Signal generator. Clock signals can be generated using odd number of inverters. Flip Flop.

458 views • 23 slides

Flip flops

Flip flops. Proper assessments vs. spot assessments Moderator: Ernie Scheidemann, CTA Speakers: George F. Librizzi, CTA, ASA/IFAS, SCGREA Matthew Rinaldi, CTA, SCGREA Fred Semrau, Esq. Thomas Olsen, Esq. DCA RULES – SIGNIFICANT CHANGES TO MINOR WORK & ORDINARY MAINTENANCE

432 views • 35 slides

Flip-Flops

מבנה המחשב + מבוא למחשבים ספרתיים תרגול 10#. Flip-Flops. An edge-triggered flip-flop is not a combinational circuit. Claim: An edge-triggered flip-flop is not a combinational circuit. Proof: Every combinational circuit implements a Boolean function.

159 views • 9 slides

Flip Flops

Flip Flops. Unit-4. Flip Flop. A basic sequential circuit is a flip-flop Flip-flop has two stable states of complementary output values. SR Flip Flop. SR Flip Flop. SR (set-reset) flip-flop based on two nand gates. Clocked SR Flip Flop Circuit.

4.37k views • 19 slides

More Related