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We introduce a general diagrammatic theory of digital circuits, based on connections between monoidal categories and graph rewriting. The main achievement of the paper is conceptual, filling a foundational gap in reasoning syntactically and symbolically about a large class of digital circuits (discrete values, discrete delays, feedback). This complements the dominant approach to circuit modelli...

A neurocomputer was implemented using radial basis functions and a combination of analog and digital VLSI circuits. The hybrid system uses custom analog circuits for the input layer and a digital signal processing board for the hidden and output layers. The system combines the advantages of both analog and digital circuits. featuring low power consumption while minimizing overall system error. ...

   Multiplier is one of the important components in many systems such as digital filters, digital processors and data encryption. Improving the speed and area of multipliers have impact on the performance of larger arithmetic circuits that are part of them. Wallace algorithm is one of the most famous architectures that uses a tree of half adders and full adders to increase the speed and red...

This paper presents the application of using the macromodels for modeling the interconnections in some fairly complex digital high speed circuits. The analysis which is based on a time domain full wave approach, deals with signal integrity. The results of this simulation are compared with measurements, and sources of error are discussed.

In this paper, a new digital chaos circuit which can generate multiple-scroll strange attractors is proposed. Being based on the piecewise-linear function which is determined by on-chip supervised learning, the proposed digital chaos circuit can generate multiple-scroll strange attractors. Hence, the proposed circuit can exhibit various bifurcation phenomena. By numerical simulations, the learn...

The paper deals with the problem of designing main FPGA-cell blocks with the current-mode gates – novel digital gates operating with constant, continuous power supply current. Using proposed approaches to designing digital current-mode circuits, the current-mode prototypes of several digital circuits and the Spartan II slice are designed. The obtained circuits are characterized by smaller hardw...