BCD (binary-coded decimal) decimal counter based on reversible logic

Abstract

The invention discloses a BCD (binary-coded decimal) decimal counter based on reversible logic. According to the BCD decimal counter based on reversible logic, one FRG (Fredkin gate) gate and one FG (Feynman gate) gate are firstly cascaded to form a reversible D trigger; one JK trigger is constituted by one FRG gate, one NOT and the reversible D trigger; four reversible JK triggers, one F5 gate, two TOF (Toffoli gate) gates, two FG gates and an NG (new gate) gate are finally cascaded to form a reversible BCD synchronous decimal counter; and four reversible JK triggers, two F3 gates, two FG gates and one TOF gate are connected to form a reversible BCD asynchronous decimal counter. The BCD decimal counter based on reversible logic has the advantage that the system energy consumption is reduced.

Description

technical field [0001] The invention relates to the design of low-power combination logic circuits in the field of information technology, in particular to a low-power BCD code decimal counter. Background technique [0002] Counters are one of the most commonly used sequential circuits, not only for counting pulses, but also for frequency division, timing, generation of beat pulses, and other sequential signals. The binary counter has the characteristics of simple circuit structure and convenient operation, but most of the decimal numbers in daily life are decimal numbers, especially when the binary number has a large number of digits, it is very difficult to read, so it is necessary to design a decimal counter. But the traditional decimal counter is irreversible, there is a loss of information bits, and it consumes a lot of energy. [0003] Landauer has confirmed that circuits constructed from traditional irreversible logic gates such as AND gates and XOR gates will inevit...

AI Technical Summary

Problems solved by technology

The binary counter has the characteristics of simple circuit structure and convenient operation, etc., but most of the contacts in daily life are decimal numbers, especially when the binary number has a large number of digits, it is very difficult to read, so it is necessary to design a decimal counter

[0003] Landauer has confirmed that the circuits constructed by irreversible traditional logic gates such as AND gates and XOR gates will inevitably produce energy loss during operation.

Images