If it seems like small stuff, recall that the first products of Hewlett-Paekard, Silicon Valley's original computing giant, were frequency counters and a simple oscillator
for measuring sound.
If engineers do not consider testability during the design process, most likely they will use a simple oscillator
, which means boundary scan tests cannot control the clock.
Kuramoto comments, "Until [I received] a preprint of the Wiesenfeld paper, I had not imagined that such a simple oscillator
model could find any physical counterpart at such a quantitative level.
Figure A1 shows a simple oscillator
in which the resonator is modeled by a parallel RLC circuit and the active part of the circuit by an N-shaped nonlinear characteristic i = g(v).
Not surprisingly, there is a great deal of character to this simple oscillator