Raymond Scott is credited with inventing the sequencer, http://raymondscott.com/1946.htm , though Buchla\u2019s development may have been independent of that.
John Loffink
jloffink@...
The Microtonal Synthesis Web Site
http://www.microtonal-synthesis.com/
The Wavemakers
Modular and Integrated Synthesizer Web Site
http://www.wavemakers-synth.com/
A "traditional" analog sequencer (like the Miton which I just posted about, the fabled SuperMoe, Moog 960 (?), Serge TKB, and the long illusive MOAS) has at least one row of pots arranged in stages (typically 8 to 16). Each pot is used to set a voltage which then shows up at the sequencer output when that stage is selected. I think these were essentially invented by Don Buchla.