— 4 —
KC0 KC1 KC2 KC3 KC4 KC5 KC6 KC7
FI0 E11 F11 F#11 G11 G#11 A11 A#11
SI0 E12 F12 F#12 G12 G#12 A12 A#12
FI1 B11 C21 C#21 D21 D#21 E21 F21 F#21
SI1 B12 C22 C#22 D22 D#22 E22 F22 F#22
FI2 G21 G#21 A21 A#21 B21 C31 C#31 D31
SI2 G22 G#22 A22 A#22 B22 C32 C#32 D32
FI3 D#31 E31 F31 F#31 G31 G#31 A31 A#31
SI3 D#32 E32 F32 F#32 G32 G#32 A32 A#32
FI4 B31 C41 C#41 D41 D#41 E41 F41 F#41
SI4 B32 C42 C#42 D42 D#42 E42 F42 F#42
FI5 G41 G#41 A41 A#41 B41 C51 C#51 D51
SI5 G42 G#42 A42 A#42 B42 C52 C#52 D52
FI6 D#51 E51 F51 F#51 G51 G#51 A51 A#51
SI6 D#52 E52 F52 F#52 G52 G#52 A52 A#52
FI7 B51 C61 C#61 D61 D#61 E61 F61 F#61
SI7 B52 C62 C#62 D62 D#62 E62 F62 F#62
FI8 G61 G#61 A61 A#61 B61 C71 C#71 D71
SI8 G62 G#62 A62 A#62 B62 C72 C#72 D72
FI9 D#71 E71 F71 F#71 G71
SI9 D#72 E72 F72 F#72 G72
CIRCUIT DESCRIPTION
KEY MATRIX
Note: Each key has two contacts, the first conatct 1 and second contact 2.
Key
Second contact
First contact
FI
KC
SI
2
1
NOMENCLATURE OF KEYS
C2
C#2 D#2 F#2 G#2 A#2 C#3 D#3 F#3 G#3 A#3 C#4 D#4 F#4 G#4 A#4 C#5 D#5 F#5 G#5 A#5 C#6 D#6 F#6 G#6 A#6
D2 E2 F2 G2 A2 B2C1 D1 E1 F1 G1 A1 B1 C3 D3 E3 F3 G3 A3 B3
C#1 D#1 F#1 G#1 A#1
C4 D4 E4 F4 G4 A4 B4 C5 D5 E5 F5 G5 A5 B5 D6 E6 F6 G6 A6 B6C6 C7
E1
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