NR
1 ØnD3
17
key 4
30 KEQ
N L
XC3 1
2 XC2
2 ØnD7
31 KMC §
XC4 3
4 XC1
3 ØnD1
18
key 5
32 KMR §
ØnD16 5
6 T
4 ØnD5
19
key 6
33 KMS §
ØnD13 7
8 ØnB8
5
K
20
key 7
34 KMAS §
ØnD12 9 10 Ø3
6 ØnD4
21
key 8
35 PMANUAL
ØnD11 11 12 Ø2
7 Ø1
22
key 9
36 —
— 13 14 Ø1
8 nPXI
23 KCLR
37 —
ØnD1 15 16 ØnD1
9
key RC
24 KMD
38 IDLE
ØB1 17 18 —
10 VDD
25 KCE
39 Ø3
ØB2 19 20 —
11
K
26 KD
40 P
ØB4 21 22 —
12 ØB1
27 PTRIGGER 41 —
ØB8 23 24 —
13
key 0
28 KDP
42 GND
— 25 26 —
14
key 1
43 nDPØD
GND 27 28 GND
15
key 2
29 KS
44 X
V C L 29 30 V C L
16
key 3
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
2 ØnD7
ØnD1 3
4 ØnD5
K
5
6 ØnD4
Ø1 7
8 nPXI
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
Display Board
(component side view)
NP01
NP06
1-1
5-5
5-4
5-3
5-2
5-1
1-2
7-1
Sharp Compet 17 Calculator
Section: Physical Layout and Connectors
Page: 17
Rendition: 2020 May 20
03
04
05
01
• 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.
02
Digit 1
(LSD)
Digit 12
(MSD)
Logic Board
(component side view)
component side:
solder side:
NK43
NK44
NK01
NK02
6-1
6-4
6-7
6-2
6-5
6-8
6-3
6-6
6-9
2-1
2-3
4-1
3-1
7-2
7-3
7-4
2-2
3-2
A8
2-4
3-3
2-8
6-10
2-5
2-9
6-11
2-6
2-10
6-12
2-7
2-11
4-2
1-4
1-3
11
12
15
16
17
21
22
23
24
25
26
27
31
32
33
34
35
38
41
42
43
44
45
46
47
48
49
51
52
53
54
55
56
57
58
61
62
63
64
65
66
67
67
7-5
13
14
36
37
92
93
94
8
2
7-6
7-7
7-8
7-9
7-10
7-11
4-3
4-4
4-5
1-5
1-6
7-12
4-6
7-13
7-14
1-7
4-7
2-12
8
1
8
3
8
4
9
1
9
5
9
6
NL43
NL44
NL01
NL02
M-1
M-3
M-4
M-5
M-6
M-7
M-2
M-9
M-10
9
7
9
8
M-8
17
26
18
46
19
8
9
27
25
30 31
29
33 45
32
34
35
36
23
24
20
21
22
16
1
2
3
4
5
6
7
10
11
12
13
14
39
40
15
37
38
41
42
43
44
47
28