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Method and device for acquiring state expression of JK trigger
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A technology of expressions and triggers, applied in the electronic field, can solve problems such as increasing troubles and achieve the effect of improving efficiency
Inactive Publication Date: 2016-05-11
INSPUR BEIJING ELECTRONICS INFORMATION IND
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Problems solved by technology
If a JK flip-flop is selected, the simplest state equation (state expression) written according to the second-state Karnaugh map is often inconsistent with the form of the flip-flop characteristic equation, and it is necessary to use the formula method to transform the state equation into a JK flip-flop characteristic equationstandard form, which undoubtedly adds unnecessary trouble
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Embodiment 1
[0035] figure 1 It is a flowchart of a method for obtaining a state expression of a JK flip-flop provided in Embodiment 1. The method of obtaining the state expression of the JK flip-flop, including:
[0036] S10: Obtain the next-state Karnaugh map of the pin to be solved on the next-state Karnaugh map of the sequential logic circuit;
[0037] S11: The second-state Karnaugh map of the pin to be solved is divided into a first division part and a second division part;
[0038] Among them, the first division part is Q n = 0 corresponding to the second state Karnaugh map, the second split part is sum Q n =1 corresponds to the second state Karnaugh map; Q n is the label of the nth pin to be solved, and n is an integer greater than or equal to 0.
[0039] In the specific implementation, the sequential logic circuit contains a plurality of pins, respectively marked as Q 0 , Q 1 , Q 2 ......Q n . The next-state Karnaugh map of a certain pin to be solved is obtained on the ob...
Embodiment 2
[0056] Figure 5 A structural diagram of a device for obtaining a state expression of a JK flip-flop provided by the present invention. The means for obtaining the state expression of the JK flip-flop include:
[0057] The first acquisition unit 10 is used to acquire the next-state Karnaugh map of the pin to be solved on the original next-state Karnaugh map of the sequential logic circuit;
[0058] The segmentation unit 11 is used to divide the second-state Karnaugh map of the pin to be solved into a first segmentation part and a second segmentation part;
[0059] Among them, the first division part is Q n = 0 corresponding to the second state Karnaugh map, the second split part is sum Q n =1 corresponds to the second state Karnaugh map; Q n is the label of the nth pin to be solved, and n is a positive integer greater than or equal to 0.
[0060] As a preferred embodiment, it also includes:
[0061] The second acquisition unit is configured to obtain the state expression...
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Abstract
The invention discloses a method and device for acquiring the state expression of a JK trigger. The method includes the steps that a next state karnaugh map of a pin to be resolved is acquired on a next state karnaugh map of a sequential logic circuit; the next state karnaugh map of the pin to be resolved is segmented into a first segment and a second segment, wherein the first segment is a next state karnaugh map corresponding to Qn=0, the second segment is a next state karnaugh map corresponding to Qn=1, Qn is the tab of the n pin to be resolved, and n is a positive integer larger than or equal to 0. Thus, by means of the method, it is unnecessary to convert the state expression of the pin to be resolved, and efficiency is improved. The invention further discloses a device for acquiring the state expression of the JK trigger.
Description
technical field [0001] The invention relates to the field of electronic technology, in particular to a method and a device for acquiring a state expression of a JK flip-flop. Background technique [0002] With the continuous development of science and technology in the current society, the electronic products used by people are becoming more and more high-tech, and sequential logic circuits are widely used in these electronic products. An important link in the design steps of sequential logic circuits is to select the type of flip-flop, and then to obtain the driving equation, state equation and output equation of the circuit. However, the characteristic equations of triggers with different logic functions are different, so the final state equations written according to the state transition diagram and the selected state code are also different. As long as the written state equation is in the same form as the characteristic equation of the flip-flop, some unnecessary errors...
Claims
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