The MPU-401, where MPU stands for MIDI Processing Unit, is an important but now obsolete interface for connecting MIDI-equipped electronic music hardware to personal computers. It was designed by Roland Corporation, which also co-authored the MIDI standard.[1]
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- ^ Souvignier, Todd. Alfred's Teach Yourself Computer Audio. Alfred Music. p. 79. ISBN 978-1-4574-2002-3.