Tiny:2010/02/06 02:27

flip flop circuit diagram 晴

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Basic RS flip-flop
A basic working principle of RS flip-flop
Basic RS flip-flop is shown in Figure 1 (a) below. It consists of two non-gate, closed by means of positive feedback from, you can also use two or closed doors made by way of positive feedback. Figure (b) is the basic RS flip-flop logic symbols. Also known as the basic RS flip-flop latch (Latch) triggers.Figure 1 Basic RS flip-flop circuit and logic symbols
A gate defines an input for the Rd side, active low, as a direct home
Edge D flip-flop:
Negative Edge-triggered master-slave flip-flop operation, must be added before the positive edge input signals. If the CP high interference occurs during the input signal, then it may trigger a state of error. The edge of the trigger allows the trigger along the CP before the moment came to add the input signal. Thus, the input time is shortened by the interference, the possibility of interference is reduced. Edge D flip-flop is also known to maintain - block edge D flip-flop.
Circuit Structure: The trigger NAND gate by 6, of which G1 and G2 a basic RS flip-flop.SD and RD is connected to the input of the basic RS flip-flop, which are preset and clear end, active low. When SD = 0, and RD = 1, no matter what kind of input D for the state, will cause the Q = 1, Q = 0, the flip-flop is set to 1; when the SD = 1 and RD = 0, the trigger status is 0 , SD and RD are usually referred to directly set to 1 and set to 0 end. We set them have joined the high, does not

flip flop circuit diagram

affect circuit operation. Works as follows:
1.CP = 0, the NAND gate G3 and G4 block, its output Q3 = Q4 = 1, triggers the state change. Meanwhile, Q3 and Q4 to Q5 Q6 of the feedback signal to the two doors open, so you can receive input signal D, Q5 = D, Q6 = Q5 = D.
2. When the CP changes from 0 to 1 flip-flop flip. G3 and G4 when open, they Q3 and Q4 of input from the G5 and G6 state output state decision. Q3 = Q5 = D, Q4 = Q6 = D. RS flip-flop from the basic logic function can see, Q = D.
3. Trigger flip in the CP = 1 input signal is blocked. This is because the G3 and G4 open, they Q3 and Q4 the output of the state are complementary, that is, there must be a 0, if Q3 is 0, output by the G3 to the G5 G5 line will be the feedback input blockade, the blockade of the D flip-flop of the path leading to the basic RS; the feedback line played to trigger state and stop at 0 to 1 state of flip-flop effect, it is set to 0, the feedback line is called the maintenance line, set 1 block line. Q4 is 0, the G3 and G6 blockade, D-side path leading to the basic RS flip-flop is also blocked. Q4 output feedback to the G6 line of play to maintain a state of flip-flop effect, called the maintenance line is set to 1; Q4 output to input feedback line G3 to play the role of preventing the trigger set to 0, called the blocking line set to 0 . Therefore, the trigger is often referred to as the maintenance - blocking trigger. In short, the trigger is a positive edge in the CP input signal prior to acceptance, positive edge triggered flip, positive edge after the input Jibei block, three steps are completed at the positive edge, so it triggers the edge said. Compared with the master-slave flip-flop
With the technology edge triggers a stronger anti-interference ability and higher operating speed. Functional Description
1. State transition truth table
2. Characteristic equation Qn 1 = D1. Created: blocking by the next flip-flop of the circuit diagram can be seen to maintain, because CP signal is added to the door on the G3 and G4, which prior to the arrival gate at the rising edge of CP G5 and G6 output steady state to be established. After the input signal reaches the D-side, to go through a gate propagation delay time of G5's output state can be established, while the G6's output state to go through two gates of the transmission delay time can be established, so D side of the input signal must be arrive at the rising edge of CP, and time should be established to meet: tset 2tpd.
2. Hold time: from the next chart shows, in order to achieve edge-triggered, should ensure that CP = 1 the output of the state during the same gate G6, from D-side state changes. To this end, in the case of D = 0, when the CP have to wait after the rising edge reaches the output of gate G4 G6 low return to the gate after the input, D-side low only allowed to change. Therefore, low level input signal hold time for the tHL tpd. In the case of D = 1, the CP output rising edge will arrive G3 G4 blockade, it is not required
Input remained unchanged, so the input signal to maintain high time tHH = 3. Propagation delay time: the work of the chart is not difficult to calculate the waveforms, the arrival from the start to the rising edge of CP, the output from the high to low propagation delay time and from low to high tPHL transmission delay time tPLH are: tPHL = 3tpd tPLH = 2tpd
4. The maximum clock frequency: To ensure the composition of the gate G1 ~ G4 synchronous RS flip-flop flip reliably, CP should be greater than the duration of high tPHL, so the width of the clock signal is high should be more than tPHL tWH . In order to arrive before the next rising edge of CP gates G5 and G6 to ensure that the new output level can be firmly established, CP should not be less than the duration of low gate G4 of the transmission delay time and tset of and, that the clock signal low level width tWL tset tpd, so get:
Integrated in the actual trigger, the transmission time of each door is different, and different forms were simplified, so the results discussed above are just some
Qualitative physics. Determination of the true parameters of the experiment.
In summary, on the edge of the D flip-flop be summarized as follows:
1. Edge D flip-flop has received and the memory signals, also known as latch;
2. Edge-triggered D flip-flop means are pulse;
3. Edge D flip-flop constraints do not exist and a change phenomenon, anti-jamming performance, work fast
Isaac
2012/02/22 15:39
a d-type flip-flop, also called a d-type bistable, is a subsystem with two stable states. toggle flip-flop, or toggle bistable. here is the circuit diagram for .
Octavia
2012/02/24 15:14
4013 d-type flip-flops
Cara
2012/02/28 20:57
remote control using telephone click here for the circuit diagram . this pulse toggles the corresponding flip-flop to alternate state. the flip-flop output is used to drive a .
Alawn
2012/03/02 02:07
remote control using telephone circuit diagram
Evelyn
2012/03/04 15:33
free circuit collection of bistable multivibrator, flip flop circuits, electronic schematics or diagrams. discovercircuits.com is your portal to free electronic .
Lucy
2012/03/08 20:32
bistable multivibrator or flip/flop electronic circuits
Warner
2012/03/09 11:56
a logic circuit for implementing a flip-flop circuit that operates stably and at high speed at a low supply voltage of about 1 v. the logic circuit includes
Line
2012/03/14 07:44
logic circuit - us 5661426
Werner
2012/03/17 06:35
it is also called an sr flip-flop or a set-reset flip-flop. from the timing diagram, the action of the edge triggered d type flip-flop is clearly illustrated.
Eva
2012/03/19 15:45
sequentialdevices
Atalanta
2012/03/20 20:39
d flip-flop operation. prepare a circuit schematic diagram for the . prepare a circuit schematic diagram of the 3-stage ripple counter shown in figure 2.
Brant
2012/04/01 19:46
prac 3 - flip flops & sequential circuits
Keith
2012/04/14 09:52
multivibrator circuits, electronic schematics or diagrams. discovercircuits.com is your portal to free electronic circuits links.
Cary
2012/04/22 01:19
multivibrator electronic circuits
Wallis
2012/04/27 09:39
consequently, and edge-triggered s-r circuit is more properly known as an s-r flip-flop, . a flip-flop is a latch circuit with a "pulse detector" circuit connected to the .
Garbo
2012/05/01 13:14
edge-triggered latches: flip-flops : multivibrators
Leander
2012/05/06 11:16
flip flop a bistable multivibrator. a circuit which has two output states and is switched from one to the other by means of an external signal
Bill
2012/06/03 09:21
flip-flop: definition from answers.com
Mayme
2012/06/16 11:08
both latches and flip-flops are circuit elements whose output depends . a master-slave d-flip-flop is built from two sr-latches and some gates. here is the circuit diagram: .
Ailin
2012/07/05 00:30
talk:flip-flop (electronics) - wikipedia, the free encyclopedia
Charlene
2012/07/05 07:10
after knowing the basics about flip-flops, you must be wondering how to construct one! read here to know about the construction of a basic flip-flop circuit using .
Charlotte
2012/07/05 12:38
an elementary flip-flop circuit explored
Upton
2012/07/08 18:52
7474 ic circuit diagram - in the catalogue of ham radio resources at dxportal.com . related text in page: "the d flip flop on the left (attached to the spst switch) is a .
Michell
2012/07/18 05:57
7474 ic circuit diagram
Burnett
2012/07/19 01:09
the circuit as you can see from its diagram is very simple and only uses 8 components. the heart of the circuit is the ic cd 4011 that is connected as a flip-flop.
Alon
2012/07/26 22:43
touch switch - circuit diagrams, schematics, electronic projects
Page
2012/08/02 10:52
flip-flops are often employed in high-speed circuit applications, . figure 3 is a circuit diagram of another embodiment of a low cq flip-flop.
Allan
2012/08/04 06:25
(wo/2002/103903) a flip-flop with advantageous timing
Esther
2012/08/11 23:49
a flip-flop is a circuit which exists in one of two states and so can store information. flip-flops are non linear circuits, meaning the the output from one .
Theresa
2012/09/07 05:29
practical electronics/flip-flops - wikibooks, collection of .
Michell
2012/09/08 15:17
the operation of this circuit is quite easy to understand if you draw a pulse diagram for it and analyze the flip-flop's output over time.
Grover
2012/09/14 01:34
flip-flop circuits : worksheet
Elaineelaine
2012/09/17 18:33
flip flop. normal register black box representation. 2.1.3 fetch hardware circuit diagrams . initializer circuit diagram. pc initializer black box representation .
Joyce
2012/09/24 13:29
detailed circuit diagrams
Yedda
2012/09/30 12:57
the jk flip-flop. state diagram. 1. 0. jk = x1. jk = 1x. jk = 0x. jk = x0. 7 . the master slave jk flip-flop. timing diagram. july 27, 2009. ece 152a .
Maureen
2012/10/04 12:51
flip-flops and sequential circuit design
Mortimer
2012/10/08 18:04
the monostable flip flop is a electronic circuits that is used to produce a single pulse each time it is triggered. sometimes, this circuit called a 'one
Sean
2012/10/11 18:12
non retrigerable monostable multivibrator using transistors
Kerry
2012/10/29 09:19
the circuit of the s-r flip flop using nand gate and its truth table . the circuit diagram and truth-table of a j-k flip flop is shown below.
Merlin
2012/11/02 06:39
flip flops
Sylvia
2012/11/08 05:26
a flip-flop circuit can be constructed from two nand gates or two nor gates. logic diagram of a master-slave flip-flop. the timing relationship is .
Ellis
2012/11/10 09:10
flip-flops
Bard
2012/11/10 23:50
from the diagram it is evident that the flip flop has mainly four states. the circuit diagram and truth-table of a j-k flip flop is shown below.
Alva
2012/11/16 10:07
digital electronics - electronic circuits-circuit diagram .
Stella
2012/11/16 18:53
here the analog flip-flop which built based on 2 transistors work as switch. this is very easy made and very cheap circuit. you can use this circuit as the
Murphy
2012/11/23 12:30
analog flip-flop | circuitdiagram.net
Jacqueline
2012/12/03 21:38
the next diagram shows basic input options that can be used with the lm556 flip-flop circuit. both circuit a and b, when the push buttons are open the flip-flop will remain .
Barbera
2012/12/13 05:53
lm555 timer circuits
Malcolm
2012/12/18 23:59
sound controlled filp flop click here for the circuit diagram. described here is a very . copyright ? www.electronic-circuits-diagrams.com 2010 - all rights reserved.
Veromca
2012/12/27 14:21
sound controlled flip flop/switch circuit diagram
Queenie
2013/01/01 11:21
flip-flop schematics from the eccles and jordan patent filed 1918, . in digital circuits, a flip-flop is a term referring to an electronic circuit (a bistable .
Edith
2013/01/16 17:04
flip-flop (electronics) - wikipedia, the free encyclopedia
Mag
2013/01/29 22:11
ic 7490 logic diagram using flipflop - in the catalogue of ham radio resources at dxportal.com . examine the operation of circuits using flip-flop devices.
Will
2013/01/30 01:25
ic 7490 logic diagram using flipflop
Prescott
2013/01/31 17:42
applying this to the clock of d-type flip flop ic38b results in an output at pin 9 of . in the timing diagram at the bottom right of the circuit diagram.
Laurel
2013/02/04 22:45
z80 computer circuit diagrams
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