Here it is--a collection of Forrest Mims"s classic work from the Modern Electronics magazine! Using commonly available components and remarkable ingenuity, Forrest shows you how to build and experiment with circuits like these: analog comparators audio synthesizers data loggers fiber optic sensors laser diode devices MOSFET oscillators piezoelectronics power electronics programmable function generators pulse generators radio control systems and much, much, more! -analog comparators -audio synthesizers -data loggers