11. During this time he also used analog synthesizers including a Minimoog, and a Sequential Circuits Prophet-5. 12. To understand [ predict ] the behavior of formulas with feedback requires the more sophisticated analysis of sequential circuits . 13. The sounds in the PPG Wave inspired other manufacturers of digital synthesizers, such as Sequential Circuits and Ensoniq. 14. Following the purchase of Sequential Circuits by Yamaha, Dave Smith continued to develop musical instruments through Dave Smith Instruments. 15. In synchronous sequential circuits , the state of the device changes only at discrete times in response to a clock signal. 16. The Floating Points Ensemble is an instrumental ensemble headed by himself on Fender Rhodes and Sequential Circuits Pro One and Prophet keyboards. 17. In the 1980s, he used the Sequential Circuits Prophet 5 and Prophet 10, the ARP Quadra and various Korg synthesizers. 18. LP that already displayed signs of what is now his signature sound by utilizing Sequential Circuits and Korg ms-20 synths. 19. Support for Sequential Circuits instruments is now provided by Wine Country Productions, which is directed by ex-Sequential employee Dave Sesnak. 20. In 1989, Korg recruited the design team from Sequential Circuits just as they were relieved of their duties by then-Sequential owner Yamaha.