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Design method of four-bit bcd code adder based on chain permutation

A design method and strand replacement technology, which is applied in the field of DNA strand replacement, can solve the problems of high parallelism, high yield, and shortened experimental time, and achieve the effect of sufficient strand replacement reaction and stable output results

Active Publication Date: 2019-07-16
DALIAN UNIV
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Problems solved by technology

(4) Because of its high parallelism and high yield, the experimental time is greatly shortened

Method used

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  • Design method of four-bit bcd code adder based on chain permutation
  • Design method of four-bit bcd code adder based on chain permutation
  • Design method of four-bit bcd code adder based on chain permutation

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Embodiment 1

[0036] Embodiments of the present invention are carried out under the premise of the technical scheme of the present invention, use Visual DSD software simulation simulation, provide detailed implementation and specific operation process, but protection scope of the present invention is not limited to following implementation example. Because the 8421BCD code is adopted, the range of the addend and the summand is 0 to 9. In this embodiment, 2 plus 3 is used as an example, and the specific values ​​are shown in Table 2.

[0037] Step 1: Input the summand and the addend in the form of BCD code as A=(0,0,1,0) and B=(0,0,1,1) respectively, and the initial carry C=0.

[0038] Step 2: Construct the DNA signal chain according to DSD syntax and dual-track logic thinking40 >, 30 >, 21 >, 10 >, 40 >, 30 >, 21 >, 11 > and 0 >.

[0039] Step 3: Define and initially input the signal chain concentration Con, and set Con=1000, (see Table 2).

[0040] Step 4: Perform addition in the same Jo...

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Abstract

The invention relates to the field of strand displacement, and discloses a design method of a four-bit BCD code summator based on DNA strand displacement. In the design method, a thought of double rail logic is introduced, a monorail logic circuit comprising 17 alternative denial gates, 12 nor gates, 2 or gates and 1 and gate is simulated through a DNA strand and is converted into a double rail logic to be participate in a reaction. The method ensures that reaction is more stable and efficient, and logic of consequence obtained is clearer and easy to understand. From the view of experimental data and experimental results, the method not only can correctly process carry bit and overflow during operation, but also is high in efficiency and stable in result, and explains the design effectiveness of the summator.

Description

technical field [0001] The invention relates to the field of DNA chain replacement, in particular to a method for designing a stable and effective BCD code adder using dual-track logic and the Join gate module and Fork gate module proposed by Cardelli based on two-domain chain replacement. Background technique [0002] In the current stage of scientific and technological development, the DNA computing model has received more and more attention and support. DNA strand replacement has become the most commonly used technical method for DNA computing, and it is more and more widely used in the design of various complex organisms. Devices and the realization of complex DNA calculations, this is mainly due to the following characteristics of strand displacement: (1) In the molecular calculation model based on strand displacement reactions, a single DNA strand can represent a signal, and several strands of DNA Chains assemble together to form a molecular component. Therefore, the ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G16B15/00G06F7/38
CPCG06F7/388G16B15/00
Inventor 张强施兰兰周昌军魏小鹏
Owner DALIAN UNIV
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