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Strange nonchaotic attractors; quasiperiodically-driven Murali–Lakshmanan–Chua circuit; logical strange nonchaotic attractors; logical chaos

We investigate the effect of two aperiodic square waves in a quasiperiodically-driven Murali–Lakshmanan–Chua circuit. It is found that the response of the circuit produces logical output in both strange nonchaotic and chaotic regions. Changing the biasing of the circuit changes the response of the circuit into another kind of logic operation and SR flip flop. Further, we show how this circuit produces two logical elements as its outputs which are complementary to each other. It is also shown that the logical nature of the circuit persists even when experimental noise is present. Thus, we confirm that both the dynamical behaviours, namely strange nonchaos and chaos, can be efficient tools to construct computer architecture.

M SATHISH ARAVINDH^{1 2} R GOPAL³ A VENKATESAN¹ M LAKSHMANAN²

1. P.G. and Research Department of Physics, Nehru Memorial College (Autonomous), Affiliated to Bharathidasan University, Puthanampatti, Tiruchirappalli 621 007, India
2. Department of Nonlinear Dynamics, School of Physics, Bharathidasan University, Tiruchirappalli 620 024, India
3. Centre for Nonlinear Science and Engineering, School of Electrical and Electronics Engineering, SASTRA University, Thanjavur 613 401, India

Published

23 May 2020

Manuscript received

21 November 2019

Manuscript revised

23 January 2020

Accepted

3 February 2020

Early published

Unedited version published online

Final version published online

21 May 2020