Analog optical solutions of numerical problems tend to be fast, simple, and inaccurate. Digital optical or electronic solutions to the same problems tend to be slower, harder, and more accurate. In circumstances outlined here, hybrid analog-digital systems can be built which give the accuracy of digital solutions with intermediate degrees of speed and simplicity. Because at any instant these pr...

This paper describes three hardware devices for integrating modular synthesizers with computers, each with a different approach to the relationship between hardware and software. The devices discussed are the USB-Octomod, an 8-channel OSC-compatible computer-controlled control-voltage generator, the tabulaRasa, a hardware table-lookup oscillator synthesis module with corresponding waveform desi...

Millimeter wave (mmWave) communications have been considered as a key technology for next generation cellular systems and Wi-Fi networks because of its advances in providing orders-of-magnitude wider bandwidth than current wireless networks. Economical and energy-efficient analog/digial hybrid precoding and combining transceivers have been often proposed for mmWave massive multiple-input multip...

A hybrid system in which an olivary neuron was interconnected to an analog simulator was used to study possible mechanisms by which the combined behavior of individual olivary neurons evokes synchronized membrane potential oscillations in a large population of neurons. The analog system was composed of four identical, interconnected oscillating units, each of which was capable of producing a da...

In this paper we demonstrate a potential extension of formal veri cation methodology in order to deal with analog and mixed-signal circuits. In particular, we focus on verifying time-domain properties. The time-dependent behavior of an analog circuit can be described by a system of di erential algebraic equations. To analyze such circuits under all possible input signals and all values of param...

Analog computers can be revived as a feasible technology platform for low precision, energy efficient and fast computing. We justify this statement by measuring the performance of modern analog computer comparing it with that traditional digital processors. General statements are made about solution ordinary partial differential equations. Computational fluid dynamics discussed an example large...