Electric music instrument circuit evolution

• Analog vs Digital
  • The word analogue is used to reflect the concept when some physical phenomenon is converted into its electric signal analogue.
  • The word digital is used when a phenomenon properties are coded, then decoded.
• Digital circuits are built from “analog” components.
• Sequencers can’t be built without digital circuits.
• I would divide sequencer to analog and digital based on whether the data is stored digitally or not.
• Selected sequencer timeline:
  • 1964 Master Timer of Integrated Synthesizer
  • 1964-65(?) Buchla 123 (example)
  • 1967 Moog 960 (example)
  • 1968 Sähkökvartetti
  • 1968 Andromatic
  • 1969 DICO
  • 1970 (or late 1969) Moog Coordinated Electronic Studio (CEMS)
  • 1970 DIMI-A
  • 1971 EMS Synthi 100 (pic)
  • 1972 EMS KS (example)
• Selected electronics timeline:
  • 1947 BJT Transistors
  • 1960 NORBIT (RTL/DTL = resistor-transistor-logic/diode-transistor-logic), ±6V (wikipedia)
  • 1961 µL900 family +3.6V (reverse engineering project)
  • ? MC700 (RTL) +3.6V (datasheets)
  • 1964 DIP/DIL package
  • 1964 7400-series (TTL) (wikipedia)
  • 1965 µA709 opamp
  • 1968 µA741 opamp
  • 1968 4000-series (CMOS) (wikipedia)
  • 1978 TL07X opamp