Combining the two tables, our indexing table might look like this.
63
55
47
39
31
23
15
7
62
54
46
38
30
22
14
6
61
53
45
37
29
21
13
5
60
52
44
36
28
20
12
4
59
51
43
35
27
19
11
3
58
50
42
34
26
18
10
2
57
49
41
33
25
17
9
1
56
48
40
32
24
16
8
0
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
0
The shaded blocks describe how key code indexes are arrived at using strobe and data pins
in a 4 × 6 arrangement of keys.
Physical Connections
Pins 15 through 10 are shown, but are unused.
Pins 9, 8, 7 and 6 are strobe pins.
Pins 5 through 0 are data pins.
Assigning Key Code Indexes
Data pins 5 through 0 determine the key code indexes (shaded area):
Pin 0 is networked to 0, 8, 16, 24.
Pin 1 is networked to 1, 9, 17, 25.
Pin 2 is networked to 2, 10, 18, 26.
Pin 3 is networked to 3, 11, 19, 27.
Pin 4 is networked to 4, 12, 20, 28.
Pin 5 is networked to 5, 13, 21, 29.
Strobe pins 9 through 6 strobe the key code indexes (black blocks):
Pin 9 strobes key indexes 29 through 24.
Pin 8 strobes key indexes 21 through 16.
Pin 7 strobes key indexes 13 through 8.
Pin 6 strobes key indexes 5 through 0.
The remaining pins and indexes are unused.
User ’s Manual
157
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