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N R
1 ØnD3
17 key 4
2 ØnD7
3 ØnD1
18 key 5
4 ØnD5
19 key 6
5 K
20 key 7
6 ØnD4
21 key 8
22 key 9
7 Ø1
8 nPXI
23 KCLR
9 key RC
24 KMD
10 VDD
25 KCE
11 K
26 KD
12 ØB1
27 PTRIGGER 41 —
13 key 0
28 KDP
14 key 1
15 key 2
29 KS
16 key 3
• Italicised expressions are connections with no signal
name in the schematic.
• ØnDx signals on the NK and NR connectors have a
diode between the connector and the actual signal.
See the Keyboard page.
• The NK and NR connector pins are numerically
correlated.
Sharp Compet 17 Calculator
Section: Physical Layout and Connectors
Page: 17
Rendition: 2020 May 20
N L
30 KEQ
XC3 1
31 KMC §
XC4 3
32 KMR §
ØnD16 5
33 KMS §
ØnD13 7
34 KMAS §
ØnD12 9 10 Ø3
35 PMANUAL
ØnD11 11 12 Ø2
36 —
— 13 14 Ø1
37 —
ØnD1 15 16 ØnD1
38 IDLE
ØB1 17 18 —
39 Ø3
ØB2 19 20 —
40 P
ØB4 21 22 —
ØB8 23 24 —
42 GND
— 25 26 —
43 nDPØD
GND 27 28 GND
44 X
V C L 29 30 V C L
45 —
VDD 31 32 VDD
— 33 34 —
nPXI 35 36 —
— 37 38 ØnD4
— 39 40 ØnD3
— 41 42 ØnD5
— 43 44 ØnD7
N K
ØnD3 1
ØnD1 3
K 5
Ø1 7
KRC 9 10 VDD
K 11 12 ØB1
key 0 13 14 key 1
key 2 15 16 key 3
key 4 17 18 key 5
key 6 19 20 key 7
key 8 21 22 key 9
KCLR 23 24 KMD
KCE 25 26 KD
PTRIGGER 27 28 KDP
KS 29 30 KEQ
§ KMC 31 32 KMR §
§ KMS 33 34 KMAS §
PMANUAL 35 36 lamp *
lamp ÷ 37 38 IDLE
Ø3 39 40 P
— 41 42 GND
nDPØD 43 44 X
2 XC2
4 XC1
6 T
6-1
6-2
8 ØnB8
6-4
6-5
6-7
6-8
M-1
4-2
1-4
4-3
4-4
4-5
2 ØnD7
4 ØnD5
M-6
M-3
34
6 ØnD4
M-4
35
M-7
M-5
36
8 nPXI
32
33 45
component side:
NK43
solder side:
NK44
1-2
7-1
6-3
2-1
4-1
7-2
6-6
7-3
2-3
3-1
6-9
7-4
8
8
1
2
Logic Board
(component side view)
1-3
2-4
6-10
3-3
2-5
7-5
37
2-8
2-9
38
15
7-6
11
21
31
41
1
12
22
32
42
7-7
2
6
13
23
33
43
M-2
10
7-8
14
24
34
44
3
7
20
15
45
35
25
7-9
4
21
5
16
46
36
22
7-10
26
47
17
16
27
17
9
37
48
7-11
18
8
24
23
38
49
46
19
25
92
28
9
9
9
26
27
9
9
93
8
7
1
5
6
M-8
94
29
30 31
NK01
NK02
05
04
03
5-1
5-2
5-3
Display Board
(component side view)
Digit 1
(LSD)
2-2
A8
3-2
8
8
3
4
6-11
6-12
2-6
2-7
1-5
40
2-10
2-11
1-6
39
14
51
61
7-12
4-6
52
62
53
63
54
64
7-13
55
65
11
1-7
56
66
12
67
7-14
57
M-9
67
13
58
4-7
44
41
43
M-10
42
47
2-12
NL43
NL01
NL44
NL02
01
02
5-4
1-1
5-5
Digit 12
(MSD)
NP06
NP01
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