title: Nonlinear waveform generation.
abstract: We developed three analog logic SPICE (Simulation Program with Integrated Circuit Emphasis, developed at the University of California, Berkeley, CA) subcircuits, a voltage comparator and a nonlinear waveform generator to compliment the previously derived functions (Goldstein and Rypins, Comput. Methods Programs Biomed. 29 (1989) 161-172) that simplify modeling of physiologic systems. The logic elements are the 'AND', 'OR' and 'NOT' Boolean functions. In addition, we derived a voltage comparator for use in our composite waveform generator. All the circuits are analog so they can be incorporated into existing analog circuits while performing digital functions.
authors.affiliation: Department of Surgery, University of California, Irvine Medical Center, Orange 92668.
authors.forename: L J
authors.initials: LJ
authors.lastname: Goldstein
authors.forename: E B
authors.initials: EB
authors.lastname: Rypins
mesh_terms: D000703:Analog-Digital Conversion; D003198:Computer Simulation; D004581:Electronics; D008838:Microcomputers; D008954:Models, Biological; D012815:Signal Processing, Computer-Assisted; D012984:Software; D012985:Software Design