Roland MC4 Computer

The Roland MC-4 Microcomposer was an early multi channel sequencer. It could be programmed using the ten key numeric keyboard or a synthesizer keyboard using the keyboards control voltage and gate outputs. This sequencer was released before the advent of MIDI, and viewed by some composers to have more perfect timing. [page 1, Roland Microcomposer MC-4 Operation Manual]

References

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title = Microcomposer MC-4 Operation Manual
publisher = Roland
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