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srikar
Joined: 09 Feb 2009
Posts: 15
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 03 Apr 2009 15:24 Toggle action in Flip flop. |
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Can some one explain me toggle action in a flip flop.
http://www.allaboutcircuits.com/vol_4/chpt_10/6.html
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penrico
Joined: 28 Aug 2001
Posts: 249
Helped: 13
Location: Argentina
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03 Apr 2009 15:34 Re: Toggle action in Flip flop. |
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It means, that every time the J and K inputs are in 1. When a rising clock pulse appears, will change boths outputs Q and /Q. If Q was 1, then with the clock pulse will change to 0, and /Q will be allways the opposite to Q.
Have a nice day
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jjfabiszak
Joined: 01 Apr 2009
Posts: 5
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03 Apr 2009 15:36 Re: Toggle action in Flip flop. |
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what exactly do you need to know. Just how a JK flip flop works??
In a J-K flip-flop in toggle mode it changes state on every clock pulse. This happens when the Set and Reset or J- K are both "High"
Does this help? sorry if it doesnt if it doesnt just let me know and i will try and explain more...
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srikar
Joined: 09 Feb 2009
Posts: 15
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03 Apr 2009 15:46 Re: Toggle action in Flip flop. |
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| Quote: |
| In a J-K flip-flop in toggle mode it changes state on every clock pulse. |
my question is >How does it change to alternate states. ?
When both inputs are 1 ,the output of nor gates is forced to 0,then how come they toggle ?[/quote]
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graciousparul
Joined: 19 Jan 2008
Posts: 124
Helped: 7
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03 Apr 2009 18:24 Re: Toggle action in Flip flop. |
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I hope this link can explain u ...........
http://www.tpub.com/neets/book13/55e.htm
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penrico
Joined: 28 Aug 2001
Posts: 249
Helped: 13
Location: Argentina
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03 Apr 2009 19:01 Re: Toggle action in Flip flop. |
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| srikar wrote: |
| Quote: |
| In a J-K flip-flop in toggle mode it changes state on every clock pulse. |
my question is >How does it change to alternate states. ?
When both inputs are 1 ,the output of nor gates is forced to 0,then how come they toggle ? |
[/quote]
When both inputs are in 1, not the nor inputs are in 1. First Q and /Q are always differents. J and K goes to a AND gate, so the nor gates are one in 1 and other in 0. When pulse detector sends the 1 to AND inputs, at outputs of AND will have the negate value. Cause one gate have the Q as input, and other gate has the /Q input.Resulting the Q and /Q will toggle.
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thomaslg
Joined: 27 Nov 2003
Posts: 16
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13 Apr 2009 5:33 Ads |
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xulfee
Joined: 27 May 2008
Posts: 434
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Location: Pakistan
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13 Apr 2009 6:12 Toggle action in Flip flop. |
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| u can check it on howstuffworks
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vistapoint
Joined: 20 Feb 2005
Posts: 91
Helped: 2
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13 Apr 2009 15:17 Toggle action in Flip flop. |
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to answer your question in a system point of view, the two stage circuit form a positive feedback. So instead of keep stabel at a certain bias, the circuit jumps to an extreme stage after an input and stay locked there
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electronics_kumar
Joined: 29 Nov 2004
Posts: 664
Helped: 26
Location: Tamilnadu
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14 Apr 2009 14:47 Re: Toggle action in Flip flop. |
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| srikar wrote: |
| Quote: |
| In a J-K flip-flop in toggle mode it changes state on every clock pulse. |
my question is >How does it change to alternate states. ?
When both inputs are 1 ,the output of nor gates is forced to 0,then how come they toggle ? |
[/quote]
every thing because of its internal connection between two logic gates
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