In this paper, the problem of global exponential stability for impulsive cellular neural networks with time-varying delays and supremums over a past interval of time is studied. The impulses are realized at fixed moments of time and can be considered as a control. We establish several stability criteria by employing Lyapunov functions and the Razumikhin technique. These results can easily be used to design and verify globally stable networks.

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This paper presents the place of technologies and digitalization for the creation of an opportunity for visual impaired people to become acquainted with the cultural heritage not only as text and as sound but also images. A concept for hardware realization of graphic tactile display is outlined based on a technology using tactile actuators bi-stable, solenoids and PIC based control board. The selected algorithm for series activation of each row of display allows using minimal number of active components to set and reset the solenoids and make possible the representation of an image, described additionally through text to sound readings of an object description.