DCB (Digital Control Bus, Digital Connection Bus[1] or Digital Communication Bus[2][3] in some sources) was a proprietary data interchange interface by Roland Corporation, developed in 1981[3] and introduced in 1982 in their Roland Juno-60 and Roland Jupiter-8 products.[3] DCB functions were basically the same as MIDI, but unlike MIDI (which is capable of transmitting a wide array of information), DCB could provide note on/off, program change and VCF/VCA control only. DCB-to-MIDI adapters were produced for a number of early Roland products. The DCB interface was made in 2 variants, the earlier one used 20-pin sockets and cables, later switching to the 14-pin Amphenol DDK connector vaguely resembling a parallel port.
- ^ Jenkins, Mark (2007). Analog Synthesizers: Understanding, Performing, Buying. Amsterdam; Boston; London: Elsevier/Focal Press. p. 91. ISBN 978-0-240-52072-8.
- ^ Russ, Martin (1996). Sound Synthesis and Sampling. Focal Press. p. 193. ISBN 978-0-240-51429-1.
- ^ a b c Kakehashi, Ikutarō; Olsen, Robert (2002). I Believe in Music: Life Experiences and Thoughts on the Future of Electronic Music by the Founder of the Roland Corporation. Hal Leonard Corporation. p. 197. ISBN 978-0-634-03783-2.