A reversible single-edge d flip-flop capable of setting numbers asynchronously

Abstract

The invention discloses a reversible single-edge D flip-flop capable of asynchronous setting, which is composed of 2 Feynman reversible logic gates and 4 Fredkin reversible logic gates, and has an asynchronous setting enabling signal input terminal and a clock signal input terminal , data input terminal, preset number input terminal, first logic low level input terminal, second logic low level input terminal, third logic low level input terminal, and asynchronous setting enable signal output terminal, flip-flop Current signal output terminal, first garbage bit output terminal, second garbage bit output terminal, third garbage bit output terminal, 2 signal output terminals for outputting clock signal or logic low level signal; the advantage is that it has a single The edge D flip-flop function and the asynchronous setting function are beneficial to make the reversible sequential logic circuit run from a definite initial state or return from an error state to a controllable definite state after asynchronous setting.

Description

technical field [0001] The invention relates to a reversible logic circuit, in particular to a reversible single-edge D flip-flop capable of asynchronously setting numbers, which is composed of a Feynman reversible logic gate and a Fredkin reversible logic gate. Background technique [0002] How to reduce circuit power consumption is a key issue in integrated circuit design at present. In the traditional non-reversible logic circuit, the loss of information bit data is the main cause of circuit power consumption. Therefore, the design of reversible logic circuit that can avoid the loss of information bit data has become a way of low power consumption design. At the same time, reversible logic circuits are also an important part of quantum computing and quantum information technology research. [0003] Reversible logic circuits include reversible combinational logic circuits and reversible sequential logic circuits. In the reversible sequential logic circuit, the importance...

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Problems solved by technology

[0005] However, the existing reversible flip-flops do not have the function of asynchronous number setting. Therefore, the research on a reversible single-edge D flip-flop with asynchronous number setting function is beneficial to make the reversible sequential logic circuit run from a definite initial state after asynchronous number setting. or from an error state back to a controllable ok state

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