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N 3
N 3
Vcc 1
2 nP0
key 8 3
4 DISP
key 9 5
6 key 0
key 1 7
8 key 2
key 3 9 10 key 4
key 5 11 12 key 6
key 7 13 14 K P
key M+ 15 16 nOP
key M– 17 18 nØD15
key ÷ 19 20 K8
key DP 21 22 K4
key Z1 23 24 K2
lamp * 25 26 K1
key Z2 27 28 lamp ÷
key RC 29 30 key =
key CE 31 32 key –
key * 33 34 X Reg IC378-1
nKCLR 35 36 CYP
Z 37 38 C S T C
CYS16 39 40 C S C C
XØENB 41 42 nOP•ØD14p
Arith IC359-13 43 44 ØD1
CZS10 45 46 Arith IC360-1
DPR In 47 48 X Reg IC370-1
Arith IC369-10 49 50 nYP1
ØB8 51 52 switch 5/4
ØB1 53 54 Arith IC368-4
Q-bit IC378-8 55 56 X
X1 57 58 ASUM10
ASUM16 59 60 OP•ØD0•B1p
CYDL, CA54 61 62 DPR
DPGT 63 64 nX=0
n(OP•ØD0•B2p) 65 66 OP•ØD0•B4p
DPNE 67 68 CQXYD
CS10S1,S23 69 70 C Z Ø
GND 71 72 CYØYP
Facit 1123 Calculator
Section: Connectors
Page: 15
Rendition: 2014 Mar 6
N 2
N 2
Vcc 1
2 nP0
nMANUAL 3
4 nDP0
DISP 5
6 nDP6
nØD0 7
8 nDP5
nØD1 9 10 nDP4
nKCLR 11 12 nDP1
nKP 13 14 nDP2
nOP 15 16 nDP3
nØD15 17 18 ØB48
nØD14 19 20 D Latch IC253-11
K8 21 22 DP>4
K4 23 24 CZS10
K2 25 26 —
K1 27 28 DP>3
Ø 29 30 nDL2
Ø p 31 32 DL2
X Reg IC281-11 33 34 DL1
CYP 35 36 nDL1
CSTC 37 38 Z
C S C C 39 40 nDL8
CYS16 41 42 nDL4
XØENB 43 44 ØD1
Arith XOR1-b 45 46 nOP•ØD14p
Arith IC265-6 47 48 DPR In
OP•ØD0•B1p 49 50 X Reg IC272-10
nYP1 51 52 ØB8
Arith IC277-13 53 54 ØB1
Q-bit IC246-6 55 56 OP•ØD0•B4p
X 1 57 58 X
CYDL 59 60 ASUM10
nX=0 61 62 ASUM16
n(OP•ØD0•B2p) 63 64 DPR
C Z Ø 65 66 CQXYD
CS10S1,S23 67 68 Arith IC263-1
CYØYP 69 70 DP>2
GND 71 72 DP>6
• Italicised expressions are connections with no signal name in the schematic.
• Bold-faced expressions are signal sources.
• See preceding page for connector orientation.
N 1
N 1
Vcc 1
2 Vcc
nDP0 3
4 —
nDP6 5
6 —
nDP5 7
8 nØD0
nDP4 9 10 nØD1
nDP1 11 12 —
nDP2 13 14 —
nDP3 15 16 ØB1
ØB48 17 18 nØD15
nØB8p 19 20 nØD14
— 21 22 —
V+a 23 24 V+a
— 25 26 —
ØB8 27 28 —
nDL2 29 30 Ø
DL2 31 32 Øp
DL1 33 34 —
nDL1 35 36 —
DISP 37 38 —
nDL8 39 40 —
nDL4 41 42 —
GND 43 44 GND
NK (keyboard)
NK (keyboard)
NK (keyboard)
NK (keyboard)
NK (keyboard)
1 key 1
17 –
30 key DP
2 key 2
31 key *
3 key 3
18 nP0
32 key /
4 key 4
19 –
33 key =
5 key 5
20 nDP0
34 key –
6 key 6
21 nDP2
35 key RC
7 key 7
22 nDP4
36 nKCLR
8 key 8
23 nDP6
37 key CE
9 key 9
24 DP>2
38 key M+
10 key 0
25 DP>4
39 key M–
40 key MR/C
11 DP>3
26 DP>6
12 DPNE
27 nDP3
41 key MC/R
13 DPGT
28 Vcc
42 –
14 switch 5/4
43 lamp *
15 CA54
29 GND
44 –
16 –
45 lamp /
NR (remote)
NR (remote)
NR (remote)
1 key 1
30 key DP
17 nMANUAL
2 key 2
31 key *
3 key 3
18 nP0
32 key /
4 key 4
19 X
33 key =
5 key 5
20 nDP0
34 key –
6 key 6
21 nDP2
35 key RC
7 key 7
22 nDP4
36 nKCLR
8 key 8
23 nDP6
37 key CE
9 key 9
24 DP>2
38 key M+
10 key 0
39 key M–
25 DP>4
11 DP>3
26 DP>6
40 key MR/C
41 key MC/R
12 DPNE
27 nOP
13 DPGT
28 nDP3
42 ASUM16
14 switch 5/4
43 XØENB
15 CA54
29 GND
44 Ø
16 —
45 nØD0
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